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Avoid playing agressively, wait for him to come in your face then W him and siturb his combo with E.
Zoe
Almost useless ultimate, look to roam if enemy Zoe plays too safe
LeBlanc
Can outsmart you easily in high elo
Irelia
Outsustains you, look up to shutting her down in the mid game and play safe early.
Mordekaiser
Outsustains Sylas, build Magic Resist
Malzahar
Always ult first, so that when he ults back he is not prepared with his W and E and has to run after then end of it but you chase him down.
Syndra
Play safe, and wait for opportunities.
Vladimir
Dont let Vladimir waste your time, roam.
Katarina
You easily counter her in laning phase but dont let her get fed from side lanes, look up to following her ganks or roam before she does waring youtr team about her
Yasuo
Not a threat at all. If playing aggresively let him dive you and ult you, after he does use W and Barrier if you have one and quickly get his ultimate and if possible activate it under your tower to snowball.
Yone
When he casts E, you dash back and let him recast his E then you activate your E2 chains on his ghost body or even ult it with yone's own ult while he is still traveling to his body unable to escape the cc you are about to give him.
Aatrox
Heal Boost for W and usefull movement speed boost.
Ahri
Sylas with 5 dashes? Ofc it's OP, look to dive and escape safely.
Akali
Try to outsmart Akali, she usualy would get confused if you ult just after her.
Alistar
Fair enough when you are tanky and want to dive.
Amumu
Ideal, look to engage first with your team using Amumu R by first using E2 to get in the middle of the enemy team.
Anivia
Drains mana fast, use only to finish Eggnivia.
Annie
Useful for bodyblocking enemy skillshots and good scaling.
Aphelios
Bad scaling but useful enough when Aphelios has cannon weapon.
Ashe
Oneshots
Aurelion Sol
Good ApP scaling useful to navigate teamfiught.
Azir
As Azir does, let Azir push so that you can put him under your tower, its easier for you because you have better gapcloser.
Bard
Depends on how you use it
Blitzcrank
Gives usefull pasive, which increases your DPS, look to use it only when it is going to expire.
Brand
Doesnt ignite enemies and deals very little damage.
Braum
Great teamfight engage, has great scaling in Sylas.
Caitlyn
Rarely enough to be lethal.
Camille
Trapping someone in a box is a death sentence.
Cassiopeia
Always make sure they look in your face. It's much easier to make your ult unexpected because Sylases cast animation is not as clear as Cassiopeas.
Cho'Gath
I love roaming Top and building tank in these games. Stacking is very OP.
Corki
Useful to get free Petricite Burst.
Darius
Doesn't deal much but refreshes on kill.
Diana
Oneshoting, more op than Amumu ult.
Dr. Mundo
Rarely useful when you build tank.
Draven
Rarely lethal.
Ekko
Maybe the best ult to steal.
Elise
Too limited. Use to chase someone who flashed.
Evelynn
Sylas has better gap closers its much more OP in his hands.
Ezreal
Oneshots
Fiddlesticks
Always ult from place with no vision for the enemy.
Fiora
Only when you really need to heal your team.
Fizz
Wait Fizz to use E when trying to escape.
Galio
Dont let Galio ult after you.
Gangplank
Slow is nice.
Garen
The best ultimate against Garen is his own.
Gnar
Aim to push enemies in the walls.
Gragas
A lot of damage, push someone towards you for free W.
Graves
Low damage.
Hecarim
Incredible engage.
Heimerdinger
Good overall
Illaoi
You can redirect tentacle attacks with W but its the worst ult you can steal.
Irelia
Slow is lethal vs Sylas.
Ivern
Meh, works out but I almost never used it.
Janna
Second healer? Also you can E2 into an enemy, position behind it and then push it with Janna R.
Jarvan IV
Useful when used against diving Jarvan 4.
Jax
Very useful passive that increases your DPS and resistances are good overall. Look to get rid of this fast.
Jayce
Fun, you can really prove you are the better Jayce.
Jhin
You can help your team finish kills with the slow, or prevent enemies from reaching drake pit.
Jinx
Low damage.
Kai'Sa
Shield is nice.
Kalista
Very strong, because Kalista has her weaknesses because of this really good ult but Sylas doesnt.
Karma
It's fine and practical.
Karthus
Wait for your Dark Harvest rune.
Kassadin
It's still a flash.
Katarina
Actualy deals small damage in Sylas, use for Grevious Wounds mostly.
Kayle
Sylas never dieeeeeeees!
Kayn
Wait your cooldowns inside an enemy.
Kennen
Win condition.
Kha'Zix
Easy to escape Kha'zix ganks.
Kindred
Sylas never dies/ Sylas feels useful
Kled
Charge!
Kog'Maw
Use only against Kog'maw, its tilting when it kills you.
LeBlanc
Bad if you get Q.
Lee Sin
Ideal. You can do the Lee sin combo but actualy better. E R Flash E W
Leona
Just hit it
Lillia
Look to hit everyone with ludens or petricite burst, then win the teamfight.
Lissandra
Sylas never dies.
Lucian
Bad scaling.
Lux
Tilting.
Malphite
Best ultimate.
Malzahar
Amazing shut downs.
Maokai
Use after knocking up someone with E2.
Master Yi
Sometimes feels OP, when chasing down multiple enemies and having rolled Predator rune with omnistone.
Miss Fortune
Bad scaling.
Mordekaiser
Use to save someone from Mordekaiser's ult by entering in the same realm with the enemy support.
Morgana
Buy Zhonya.
Nami
OP
Nasus
Solid
Nautilus
Amazing CC follow up
Neeko
Garanteed to hit if cast just after E then hit E2 just before it triggers. Neeko can't flash or move but you can E2 to outplay while still casting it.
Nidalee
Use when having cooldowns.
Nocturne
Fine.
Nunu & Willump
Busted for saving your skin when W on cooldown.
Olaf
It's fine to have unstopabble Sylas.
Orianna
Go in the enemies face, it casts inside you.
Ornn
Great engage.
Pantheon
Great roam potential.
Poppy
Use to get rid of enemies not damage.
Zoe
Use only to flex on low hp Zoe by casting W with this R.
Zyra
OP, wins any fight for baron or drake.
Synergies
IdealStrongOkLowNone
Aatrox
Heal Boost for W and usefull movement speed boost.
Ahri
Sylas with 5 dashes? Ofc it's OP, look to dive and escape safely.
Akali
Try to outsmart Akali, she usualy would get confused if you ult just after her.
Alistar
Fair enough when you are tanky and want to dive.
Amumu
Ideal, look to engage first with your team using Amumu R by first using E2 to get in the middle of the enemy team.
Anivia
Drains mana fast, use only to finish Eggnivia.
Annie
Useful for bodyblocking enemy skillshots and good scaling.
Aphelios
Bad scaling but useful enough when Aphelios has cannon weapon.
Ashe
Oneshots
Aurelion Sol
Good ApP scaling useful to navigate teamfiught.
Azir
As Azir does, let Azir push so that you can put him under your tower, its easier for you because you have better gapcloser.
Bard
Depends on how you use it
Blitzcrank
Gives usefull pasive, which increases your DPS, look to use it only when it is going to expire.
Brand
Doesnt ignite enemies and deals very little damage.
Braum
Great teamfight engage, has great scaling in Sylas.
Caitlyn
Rarely enough to be lethal.
Camille
Trapping someone in a box is a death sentence.
Cassiopeia
Always make sure they look in your face. It's much easier to make your ult unexpected because Sylases cast animation is not as clear as Cassiopeas.
Cho'Gath
I love roaming Top and building tank in these games. Stacking is very OP.
Corki
Useful to get free Petricite Burst.
Darius
Doesn't deal much but refreshes on kill.
Diana
Oneshoting, more op than Amumu ult.
Dr. Mundo
Rarely useful when you build tank.
Draven
Rarely lethal.
Ekko
Maybe the best ult to steal.
Elise
Too limited. Use to chase someone who flashed.
Evelynn
Sylas has better gap closers its much more OP in his hands.
Ezreal
Oneshots
Fiddlesticks
Always ult from place with no vision for the enemy.
Fiora
Only when you really need to heal your team.
Fizz
Wait Fizz to use E when trying to escape.
Galio
Dont let Galio ult after you.
Gangplank
Slow is nice.
Garen
The best ultimate against Garen is his own.
Gnar
Aim to push enemies in the walls.
Gragas
A lot of damage, push someone towards you for free W.
Graves
Low damage.
Hecarim
Incredible engage.
Heimerdinger
Good overall
Illaoi
You can redirect tentacle attacks with W but its the worst ult you can steal.
Irelia
Slow is lethal vs Sylas.
Ivern
Meh, works out but I almost never used it.
Janna
Second healer? Also you can E2 into an enemy, position behind it and then push it with Janna R.
Jarvan IV
Useful when used against diving Jarvan 4.
Jax
Very useful passive that increases your DPS and resistances are good overall. Look to get rid of this fast.
Jayce
Fun, you can really prove you are the better Jayce.
Jhin
You can help your team finish kills with the slow, or prevent enemies from reaching drake pit.
Jinx
Low damage.
Kai'Sa
Shield is nice.
Kalista
Very strong, because Kalista has her weaknesses because of this really good ult but Sylas doesnt.
Karma
It's fine and practical.
Karthus
Wait for your Dark Harvest rune.
Kassadin
It's still a flash.
Katarina
Actualy deals small damage in Sylas, use for Grevious Wounds mostly.
Kayle
Sylas never dieeeeeeees!
Kayn
Wait your cooldowns inside an enemy.
Kennen
Win condition.
Kha'Zix
Easy to escape Kha'zix ganks.
Kindred
Sylas never dies/ Sylas feels useful
Kled
Charge!
Kog'Maw
Use only against Kog'maw, its tilting when it kills you.
LeBlanc
Bad if you get Q.
Lee Sin
Ideal. You can do the Lee sin combo but actualy better. E R Flash E W
Leona
Just hit it
Lillia
Look to hit everyone with ludens or petricite burst, then win the teamfight.
Lissandra
Sylas never dies.
Lucian
Bad scaling.
Lux
Tilting.
Malphite
Best ultimate.
Malzahar
Amazing shut downs.
Maokai
Use after knocking up someone with E2.
Master Yi
Sometimes feels OP, when chasing down multiple enemies and having rolled Predator rune with omnistone.
Miss Fortune
Bad scaling.
Mordekaiser
Use to save someone from Mordekaiser's ult by entering in the same realm with the enemy support.
Morgana
Buy Zhonya.
Nami
OP
Nasus
Solid
Nautilus
Amazing CC follow up
Neeko
Garanteed to hit if cast just after E then hit E2 just before it triggers. Neeko can't flash or move but you can E2 to outplay while still casting it.
Nidalee
Use when having cooldowns.
Nocturne
Fine.
Nunu & Willump
Busted for saving your skin when W on cooldown.
Olaf
It's fine to have unstopabble Sylas.
Orianna
Go in the enemies face, it casts inside you.
Ornn
Great engage.
Pantheon
Great roam potential.
Poppy
Use to get rid of enemies not damage.
Zoe
Use only to flex on low hp Zoe by casting W with this R.
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