Triskelavus + Cauldron of Souls + Clock of Omens + Ashnod's Altar

Triskelavus

Cauldron of Souls

Clock of Omens

Ashnod's Altar

How it works

1. Activate Cauldron of Souls by tapping it, giving Triskelavus persist until end of turn.
2. Activate Ashnod's Altar by sacrificing Triskelavus, adding CC.
3. When Triskelavus dies, its persist ability triggers, returning it from your graveyard to the battlefield with two +1/+1 counters on it.
4. Activate Triskelavus' first ability twice by paying 2 and removing two +1/+1 counters from it, creating two 1/1 Triskelavite artifact creature tokens.
5. Activate Clock of Omens by tapping Triskelavus and a Triskelavite, untapping Cauldron of Souls.
6. Repeat.
7. Once you have infinite Triskelavite tokens, you may sacrifice them to deal infinite damage to any target(s).

This intricate engine relies on Triskelavus looping endlessly through the graveyard and battlefield, supercharged by Cauldron of Souls granting persist to reset its counters. When Triskelavus dies, Ashnod's Altar converts its demise into the colorless mana needed to fuel its activated ability, spawning Triskelavite tokens that can be sacrificed alongside Triskelavus itself. Meanwhile, Clock of Omens ties the whole loop together by tapping those artifacts to untap the Cauldron, allowing you to repeat the cycle, amass infinite tokens, and leverage their explosive sacrifice ability to obliterate any target.