Nadir Kraken + Dire Undercurrents + Ashnod's Altar
Nadir Kraken
Dire Undercurrents
Ashnod's Altar
Requires
Nadir Kraken must be on the battlefield.
Dire Undercurrents must be on the battlefield.
Ashnod's Altar must be on the battlefield.
You have a way to draw a card.
Mana needed: 
Steps
- Draw a card.
- Nadir Kraken triggers, causing you to pay to put a +1/+1 counter on Nadir Kraken and create a 1/1 Tentacle creature token.
- The Tentacle enters the battlefield, triggering Dire Undercurrents' first ability.
- Holding priority, activate Ashnod's Altar by sacrificing the Tentacle, adding .
- Resolve the Dire Undercurrents trigger, causing you to draw a card.
- Repeat from step 2.
Results
Infinite card draw. Infinite draw triggers. Near-infinite +1/+1 counters on Nadir Kraken. Near-infinite colorless mana. Near-infinite death triggers. Near-infinite ETB. Near-infinite LTB. Near-infinite sacrifice triggers.
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