User blog comment:B214/Talk About What You Want! 3/@comment-75.64.241.32-20150201052145/@comment-1359322-20150202132008

@anon, i was replying to this

"I mean normal bishop have 3 times more than normal pawn"

The statement you said refers to the "value or worth" of an Evil Piece. For starters there has never been a Rook has 5 times more, Knight and Bishop has 3 times more than the normal Pawn thing. Evil Pieces' consumption focuses on the compatibility, potential, etc of the servant. Of course, the Queen, Bishop, Rook, Knight is stronger than Pawn value wise but that is only number.

Just take this for example, Rias has 2 Rook pieces remaining but it doesn't necessarily mean that she can use both to reincarnate Ise.