Death's Presence + Ashnod's Altar + Triskelavus

Death's Presence

Ashnod's Altar

Triskelavus

How it works

1. Activate Triskelavus by paying 1 and removing a +1/+1 counter from it, creating a 1/1 Triskelavite artifact creature token.
2. Activate Ashnod's Altar by sacrificing the Triskelavite, adding CC.
3. When the Triskelavite dies, Death's Presence triggers, putting a +1/+1 counter on Triskelavus.
4. Repeat.
5. Once you have infinite mana, you may instead sacrifice the Triskelavite using its own ability to deal infinite damage to any target(s).