Moritte of the Frost + Staff of Eden, Vault's Key + Arcbound Crusher

Prerequisites

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Steps

1. 1Cast Moritte of the Frost from your hand or from the command zone by paying plus commander tax, if applicable, choosing to have it enter the battlefield as a copy of Staff of Eden.
2. 2Put Moritte of the Frost into your graveyard due to the legend rule.
3. 3Morrite of the Frost's enters-the-battlefield ability and Arcbound Crusher trigger.
4. 4Resolve the Arcbound Crusher trigger, putting a +1/+1 counter on it.
5. 5Resolve the Moritte of the Frost trigger, returning Moritte of the Frost from your graveyard to the battlefield as a copy of Staff of Eden.
6. 6Repeat from step 2.

Effects

• Infinite +1/+1 counters on a creature