Moritte of the Frost, River Kelpie, and Ashnod's Altar

Prerequisites

• Moritte of the Frost on the battlefield
• River Kelpie on the battlefield
• Ashnod's Altar on the battlefield
• Moritte of the Frost does not have a -1/-1 counter on it

Steps

1. Activate Ashnod's Altar by sacrificing Moritte, adding
2. Moritte dies, triggering its persist ability, returning it to the battlefield as a copy of River Kelpie with one +1/+1 counter on it
3. Moritte enters the battlefield, causing you to draw a card
4. Repeat

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite colorless mana
• Near-infinite death triggers
• Near-infinite ETB
• Near-infinite LTB
• Near-infinite sacrifice triggers