So Leona is the new champion and as you know she is pro! so i decided to give you a build which worked out for me and hopely for you too The stats arent added yet so il put em here for you

Health 430 (+87)
Mana 235 (+40)
Damage 55 (+3)
Attack Speed 0.625 (+2.9%)
Range 125
Health Regen. 9.0 (+0.85)
Mana Regen. 7.0 (+0.70)
Armor 18 (3.1)
Magic Res. 30 (+0)
Mov. Speed 310


When to play Leona:
-YOu love Tanks who can dps
-You like unicorns
-YOu can skillshot

When NOT to play leona
-I hate tanks
-I love Heal
-I'm bad at skillshots

V1.0.0.121 - Leona was added yay

In this segment i will explain Leona abilities

Sunlight This passive is just like Lux's passive only its for your allies meaning if you hit and enemy with an ability and a allie will hit it his/her hit will do an additional 20/35/50/65/80/95/110/125/140 damage

Shield of Daybreak I love this one it's a great stun and also very overpowered if you can combine this with the Solar Flare stun your enemy willb e stunned upto 2.75 seconds which is pretty sick

Eclipse Also a very good ability it does AOE damage and gives you Armor/Magic resist which can save your life also if this ability hits any enemy its shield will be prolonged for 3 seconds

Zenith Bladeone of the best ability's ingame Leona shoots out and solar image of her blade and the last enemy Champion struck by Zenith Blade will be immobilized so they cant move and Leona will dash to him/her

Solar Flare Your ultimate a low cooldown high damage ultimate which Slows and stuns it hits very fast so its almost unavoidable which makes it very overpowered

Pro's
Can soak up damage Eclipse
Has a dash Zenith Blade
Stun and slow Solar Flare Shield of Daybreak
Low CD's

Con's
Bit annoying early game (Has to wait for cooldowns to initiate)
Focused fast
When abilities on CD worth nothing
Not good 1v1

Core (armor):
Thornmail Mercury's Treads Randuin's Omen Frozen Heart Warmog's Armor Sunfire Aegis


Core (magic resist):
Force of Nature Mercury's Treads Guardian Angel Aegis of the Legion Warmog's Armor Sunfire Aegis

A hybrid core is all up to you i say get Sunfire Aegis and Aegis of the Legion and make the rest from your enemy's team

Btw Ionian Boots of Lucidity is also a good choice


Early Game:
Start off with an Doran's Shield Ruby Crystal or Boots
Try too build your way upto Aegis of the Legion / Kindlegem or Heart of Gold(for Randuin's Omen)

Mid Game:
Make sure you got your boots early game and atleast on of your core items and Build some CDR and Health try to have Sunfire Aegis for a heavy AD team try to also get Thornmail around this time

Late game:
Now its time to build up your last items like Guardian Angel Warmog's Armor Randuin's Omen Thornmail


Optional/situational Items

Banshee's Veil Also a good item
Rylai's Crystal Scepter I do NOT reccomend this item but its the way YOU play
Quicksilver Sash For when you have many Enemy's who can DoT Like FOr example Twitch

For skill sequence i also begin with
Shield of Daybreak for nice First bloods
then
Zenith Blade
Eclipse

I mostly max out Eclipse and Zenith Blade because it is more usefull then high level Shield of Daybreak in my opinion the rest is up to you

Team work is important for Leona because 1v1 she isnt very good i find leona laning well with carry's like

Ashe
Vayne
Sivir
Annie
Fiddlesticks
Kennen
Brand
Rumble
she goes well with these

Olaf
Poppy
Sion
Udyr
Warwick
Jax
Katarina

Lanes BAD with
Sona
Twitch
Urgot
Janna
Alistar
Shen
Singed

The rest of the champions are mostly neutral and depends on how the player plays it and the il add if some are good to lane with or bad

For masteries i mainly went with a full tank build because it gives her some good health/armor and madic resistance to begin with also the 4% damage reduction is nothing to laugh about after that i went for the teleport mastery because it proofs to be very usefull thereafter i went for some extra mana and hp/mana Regen to last longer while laning

In 5v5 my spells are always
Flash and Teleport
and in 3v3
Flashand Exhaust

Why? BEcause teleport helps you get around fast
BEcause flash is good for ganking, Running away etc.
Because Exhaust helps you get those ghost users and Running enemy's


Good spells
Flash THA BOMB
Ghost good to get away from ganks
Teleport Good to stop Gankers,Pushers
Cleanse Do i need to say more?


Reasonable spells
Ignite Nice spell for example Dr. mundo and enemy's with pots
Fortify Stops enemy's from pushing
Clairvoyance Can help out you and teammates (baron,dragon etc.)

ABSOLUTE NO'S
Rally USELESS
Clarity its an waste on leona
Smite Leona shouldn't jungle
Revive Only for impatient people
Heal Get away on time and buy health pots

For runes i recommend Health runes Because it will give you a stronger early game and stronger survivability

Greater Glyph of Health x9
Greater Seal of Health x9
Greater Mark of Health x9
Greater Quintessence of Healthx3

SO this is my guide i hope you guys like it these builds have helped me out ive done many games experimenting for the best build for Leona and these seem to be the best for me also try these builds before voting