Talk:Swain/@comment-5211662-20150419155303/@comment-24613667-20150419185311

However, Swain gets flat and % mana return from killing enemy units and champions, respectively. Poppy has no mana return in her kit. On top of that, Swain is a mage and is more inclined to build mana and mana regen items.

So, while his ability costs are higher, it kinda evens out.