Swain is a mid champion. At early game is no very strong(with this build), but in mid game and late game is a very strong champ. I have been in fight were all champs were fighting and with my ultimate i had the 60% of my life and killing 3 of the enemys chammps, the other 2 were killed by akali but i also received the assist thanks to my ultimate.

Swain is a mage that can control the enemies with nevermove and decrepify. And due to ravenous flock you can get into the middle of teamfight and fix the enemies to ground for the rest of your mates, giving the the oportunity to destory the enemies.

I pick flash due to his utlity and ignite for the early and mid game. Flash is always usefull; to enter into a teamfight or to escape. And ignite will help you in early and mid game.
Flash is very obvious, is the best spell you may use for all kind of champs. And ignite will help you to finish with the enemies.
Swain is a mid champion and your opponet in mid normally would be a champ tha has no many health, armor or magic resist. So, is gonna be esay to kill them with your combo and ignite.

I think that is clear why i choose thoose runes. Marks of magic penetration. Seals of manathat will help you at the early game. Glyphs of ability power. And quintessences of mana, for the same reason.

Torment + ignite
Max torment first. it is a kind of ignite and it combines very well with the ignite itself. with this combo you will do first blood very easily.

Decrepify + nevermove
sometimes is hard to had a good nevermove, thats is why this combo is good. You slow them with decrepify and then is easier to aim and had a goo nevermove.


Once You shot a good nevermove you can also use the com torment+ignite and ****k them. remember that when the enemy is suffering from torment youR attack do more damage so if u can attack them a little.