Infinite +1/+1 counters on a creatureInfinite colorless manaInfinite death triggersInfinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite self-millPut a selection of permanant cards from your library and graveyard onto the battlefield
How it works
Activate Ashnod's Altar by sacrificing Safehold Elite, adding CC.
Safehold Elite dies, triggering its persist ability and Necrosynthesis.
Resolve the Safehold Elite trigger, returning it from your graveyard to the battlefield with a -1/-1 counter and a vigilance counter on it.
Resolve the Necrosynthesis trigger, putting a +1/+1 counter on Tayam.
Activate Tayam by paying 3, removing a +1/+1 counter from Tayam, and both counters from Safehold Elite.
Holding priority, activate Ashnod's Altar by sacrificing Safehold Elite, adding CC.
Repeat steps 2-4 one additional time.
Activate Ashnod's Altar by sacrificing Safehold Elite, adding CC.
Resolve Tayam's ability from step 5, causing you to mill three cards and returning Safehold Elite from your graveyard to the battlefield.