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'Vigilance, haste Kelsien gets +1/+1 for each experience counter you have. {T}: Kelsien deals 1 damage to target creature you don't control. When that creature dies this turn, you get...
'Convoke Flying When this creature enters, search your library for a card, exile it face down, then shuffle. For as long as that card remains exiled, you may play it....
'Ravenous (This creature enters with X +1/+1 counters on it. If X is 5 or more, draw a card when it enters.) Brood Telepathy — When this creature enters, distribute...
'Sacrifice a creature: Add one mana of any color.
'At the beginning of the Horde's first main phase, reveal an additional card from the top of the Horde's library. The Horde casts that card. Hero's Reward — When Altar...
'Eldrazi Spawn creatures you control get +2/+1.
Sacrifice a creature: Add {C}{C}.
Sacrifice a creature: Add {C}{C}.
'Whenever a Sliver deals combat damage to a player, its controller may create a 1/1 colorless Sliver creature token.
'Sacrifice a creature: Add {C}{C}.
'Sacrifice a creature: Add one mana of any color.
'Until end of turn, creatures you control get +1/+1 and gain trample and infect. (Creatures with infect deal damage to creatures in the form of -1/-1 counters and to players...