Ashnod's Altar, Geralf's Messenger, Mortician Beetle, and Tayam, Luminous Enigma

Prerequisites

• Ashnod's Altar on the battlefield
• Geralf's Messenger on the battlefield
• Mortician Beetle on the battlefield
• Tayam, Luminous Enigma on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Geralf's Messenger, adding
2. Geralf's Messenger's undying ability and Mortician Beetle trigger
3. Resolve the Geralf's Messenger trigger, returning it from your graveyard to the battlefield with a +1/+1 and a vigilance counter
4. Geralf's Messenger enters the battlefield, causing target opponent to lose 2 life
5. Resolve the Mortician Beetle trigger, putting a +1/+1 counter on it
6. Activate Tayam by paying , removing a +1/+1 counter from Mortician Beetle and removing both counters from Geralf's Messenger
7. Holding priority, activate Ashnod's Altar by sacrificing Geralf's Messenger, adding
8. Geralf's Messenger's undying ability and Mortician Beetle trigger
9. Resolve the Geralf's Messenger trigger, returning it from your graveyard to the battlefield with a +1/+1 and a vigilance counter
10. Geralf's Messenger enters the battlefield, causing target opponent to lose 2 life
11. Resolve the Mortician Beetle trigger, putting a +1/+1 counter on it
12. Activate Ashnod's Altar by sacrificing Geralf's Messenger, adding
13. Mortician Beetle triggers, putting a +1/+1 counter on itself
14. Resolve the Tayam ability from step 6, causing yourself to mill three cards and return Geralf's Messenger from your graveyard to the battlefield
15. Geralf's Messenger enters the battlefield, causing target opponent to lose 2 life
16. Repeat

Results

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