Triskelavus, Cathars' Crusade, and Ashnod's Altar

Prerequisites

• Triskelavus on the battlefield
• Cathars' Crusade on the battlefield
• Ashnod's Altar on the battlefield
• Triskelavus has at least one +1/+1 counter on it
• available

Steps

1. Activate Triskelavus by paying and removing a +1/+1 counter from it, creating a 1/1 Triskelavite artifact creature token
2. The Triskelavite enters the battlefield, triggering Cathars' Crusade, putting a +1/+1 counter on each creature you control
3. Activate Ashnod's Altar by sacrificing the Triskelavite, adding
4. Repeat
5. Once you have infinite Triskelavite tokens, you may sacrifice them to deal infinite damage to any target(s)

Results

• Infinite colorless mana
• Infinite creature tokens
• Infinite damage
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite +1/+1 counters