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'Each player reveals their hand, chooses one card of each color from it, then discards all other nonland cards.
'This creature enters with four -1/-1 counters on it. Wither (This deals damage to creatures in the form of -1/-1 counters.) Whenever you cast a black spell, remove a -1/-1...
'Deathtouch
'({G/P} can be paid with either {G} or 2 life.)
Put target card from a graveyard on top of its owner's library.
'Deathtouch
'Enchant land
Enchanted land has "{T}: This land deals 1 damage to each creature and each player."
'When this creature dies, each opponent discards a card.
'{T}: Add {B} or {G}. You get a poison counter.