Flying
When you cast ~, you may discard any number of cards. If you do, this creature enters the battlefield with that many +1/+1 counters on it.
All creatures get -1/-1 for each card in their controllers' hand.
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Board wipe, potentially big flyer, and may lock down the board at the cost of a smaller hand size. Definitely a build around card. The cost of 3UB is there to prevent Oneiroi from becoming an easy Mutilate, and there are of course plenty of ways to beef up a creature to reduce its drawback, such as casting from command zone with Opal Palace ready.
3UB
Legendary Creature - Spirit Wizard
0/0
Flying
When you cast ~, you may discard any number of cards. If you do, this creature enters the battlefield with that many +1/+1 counters on it.
All creatures get -1/-1 for each card in their controllers' hand.
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Board wipe, potentially big flyer, and may lock down the board at the cost of a smaller hand size. Definitely a build around card. The cost of 3UB is there to prevent Oneiroi from becoming an easy Mutilate, and there are of course plenty of ways to beef up a creature to reduce its drawback, such as casting from command zone with Opal Palace ready.
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