Sword of the Heretic

Equip {1}{r} (Equip only as a sorcery.)
Equipped creature gains +X/+0, where X is target opponent's devotion of a color of your choice. X is static.
{x}{r}: Equipped creature gains +0/+X until end of turn, where X is the highest devotion of target opponent.
Not the person who denies the gods worshipped by the multitude, but he who affirms of the gods what the multitude believes about them is truly impious.