Abomination

Creature - Horror 2/6, 3BB (5)
Whenever Abomination blocks or becomes blocked by a green or white creature, destroy that creature at end of combat.¹
Illus. Mark Tedin

Gatherer Card Rulings [Nov 2009]

• 10/4/2004: The color of the blocking/blocked creature is checked only at declaration of the block. If the creature is indeed green or white at that time, it will be destroyed at the end of the combat even if it changes color before the combat ends.

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard, MTGO Classic
Printings (2/12)	Fourth Edition (Uncommon) Legends (Uncommon (U1))