Tayam, Luminous Enigma, Sengir, the Dark Baron, Ashnod's Altar, and Lesser Masticore

Prerequisites

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

Steps

1. Activate Ashnod's Altar by sacrificing Lesser Masticore, adding
2. When Lesser Masticore dies, its persist ability and Sengir's first ability trigger
3. Resolve the Lesser Masticore 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 Lesser Masticore
6. Holding priority, activate Ashnod's Altar by sacrificing Lesser Masticore, adding
7. Repeat steps 2-4 one additional time
8. Activate Ashnod's Altar by sacrificing Lesser Masticore, adding
9. Resolve Tayam's ability from step 5, causing you to mill three cards and returning Lesser Masticore 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