I don't see what all this fuss is about. Poison is very situational. Holy light is situational. Holy light can target a creature or a player, and has the added ability of being able to deal 10 damage to death/darkness player/creature. That's the most potent quanta-independant creature control in the game, but it only works against 1/6 of the elements. Purify should be changed to be able to target player OR creature. leave it's cost be. it's currently the most situational card in the game. All it's good for is countering direct poison. I carried one in a FG deck I had for a while, but realized that it wasn't worth it just for the 2-3 FGs that use poison.