User blog comment:Gilgamesh79/Question:Multiple Evil Piece consumed character/@comment-31137559-20180730153711/@comment-32768599-20180730155750

In the wiki "Rooks gain superhuman strength, leading to high offense and defense. " "Bishops gain enhanced magical abilities which they can use to conjure up a multitude of spells (offensive, healing, etc.). "

Well evil piece do enhance those characterisitic.So in that way it should enhance them further for multiple pieces O.o