Skrelv, Defector Mite (ONE-033) [Phyrexia: All Will Be One]

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)
Skrelv can't block.
, : Choose a color. Another target creature you control gains toxic 1 and hexproof from that color until end of turn. It can't be blocked by creatures of that color this turn. ( can be paid with either or 2 life.)