Urza, Prince of Kroog + Esika's Chariot + Phyrexian Altar + Exalted Sunborn

Urza, Prince of Kroog

Esika's Chariot

Phyrexian Altar

Exalted Sunborn

How it works

1. Activate Urza by paying 6, creating two token copies of Esika's Chariot.
2. When the Esika's Chariots enter the battlefield, their first abilities trigger, creating eight 2/2 Cat creature tokens.
3. Activate Phyrexian Altar six times by sacrificing six tokens, adding 6.
4. Repeat.

This engine relies on the exponential token-doubling power of Exalted Sunborn to turn a hefty investment of mana into an overwhelming cascade of cardboard. By using {6} to activate Urza, Prince of Kroog, you target an existing Esika's Chariot—and thanks to Exalted Sunborn's replacement effect, that single activation yields two token copies instead of one. When those new Chariots enter the battlefield, their own trigger conditions (alongside the Sunborn's doubling) flood your board with a massive army of Cat tokens. You can then feed those tokens into Phyrexian Altar to generate the exact mana needed to pay for Urza's ability again, looping the process to fuel infinite sacrifices and an endless supply of artifact creatures and mana.