Tayam, Luminous Enigma, Sengir, the Dark Baron, Ashnod's Altar, and Pyreheart Wolf

Prerequisites

• Tayam, Luminous Enigma on the battlefield
• Sengir, the Dark Baron on the battlefield
• Ashnod's Altar on the battlefield
• Pyreheart Wolf on the battlefield
• Pyreheart Wolf does not have a +1/+1 counter on it
• available

Steps

1. Activate Ashnod's Altar by sacrificing Pyreheart Wolf, adding
2. When Pyreheart Wolf dies, its undying ability and Sengir's first ability trigger
3. Resolve the Pyreheart Wolf trigger, returning it from your graveyard to the battlefield with a +1/+1 counter and a vigilance counter on it
4. Resolve the Sengir trigger, putting two +1/+1 counters on Sengir
5. Activate Tayam by paying , removing a +1/+1 counter from Sengir, and both counters from Pyreheart Wolf
6. Holding priority, activate Ashnod's Altar by sacrificing Pyreheart Wolf, adding
7. Repeat steps 2-4 one additional time
8. Activate Ashnod's Altar by sacrificing Pyreheart Wolf, adding
9. Resolve Tayam's ability from step 5, causing you to mill three cards and returning Pyreheart Wolf from your graveyard to the battlefield
10. Repeat

Results

• Infinite +1/+1 counters on Sengir
• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite self-mill
• Put all permanents with mana value three or less from your graveyard and library onto the battlefield