Moritte of the Frost + River Kelpie + Altar of Dementia

Prerequisites

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Steps

1. 1Activate Altar of Dementia by sacrificing Moritte of the Frost.
2. 2When Moritte of the Frost dies, its persist ability triggers, returning it from your graveyard to the battlefield as a copy of River Kelpie with two additional +1/+1 counters on it and a -1/-1 counter on it.
3. 3Remove one +1/+1 counter and one -1/-1 counter from Moritte of the Frost as a state-based action.
4. 4When Moritte of the Frost enters the battlefield, it and River Kelpie's first ability triggers, causing you to draw two cards.
5. 5Resolve the Altar of Dementia ability from step 1, milling target player a number of cards equal to Moritte of the Frost's power at the time of activation.
6. 6Repeat.

Effects

• Infinite card draw
• Infinite draw triggers
• Infinite self-mill
• Near-infinite creature ETB
• Near-infinite creature LTB
• Near-infinite creature sacrifice triggers
• Near-infinite death triggers
• Near-infinite mill