Urza, Prince of Kroog + Su-Chi Cave Guard + Sarcatog
Urza, Prince of Kroog
Su-Chi Cave Guard
Sarcatog
Infinite artifact ETBInfinite artifact LTBInfinite artifact sacrifice triggersInfinite creature ETBInfinite creature LTBInfinite colorless manaInfinite creature copies of artifacts you controlInfinite creature tokensInfinite death triggersInfinite creature sacrifice triggersInfinitely large creature until end of turn
How it works
Activate Urza by paying 6, creating a token copy of Su-Chi Cave Guard that is a 1/1 Soldier in addition to its other types.
Activate Sarcatog by sacrificing the Su-Chi Cave Guard token.
When the token Su-Chi Cave Guard dies, it triggers, adding eight C.
Resolve the Sarcatog ability.
Repeat.
This clever loop relies on Urza, Prince of Kroog to cheaply clone our heavy hitters, turning the high cost of a Su-Chi Cave Guard into a profitable venture by paying six mana to forge a 1/1 token copy that immediately brings an 8-mana windfall when it perishes. We feed that token directly to Sarcatog's sacrifice ability—which also permanently pumps the Sarcatog itself—netting a cool two colorless mana of profit on every single iteration. Meanwhile, Urza, Prince of Kroog’s passive anthem ensures all your artifact creatures get a beefy +2/+2 stat boost while the engine spins endlessly.