Radagast, Wizard of Wilds + Temur Sabertooth + Phyrexian Altar + Sojourner's Companion + Parallel Lives

Radagast, Wizard of Wilds

Temur Sabertooth

Phyrexian Altar

Sojourner's Companion

Parallel Lives

How it works

1. Cast Sojourner's Companion by paying 0.
2. Radagast triggers, creating two 3/3 Beast creature tokens.
3. Activate Phyrexian Altar twice by sacrificing the Beasts, adding 1.
4. Activate Temur Sabertooth by paying 1, returning Sojourner's Companion from the battlefield to your hand.
5. Repeat.

This loop centers around the incredible cost-efficiency of Sojourner's Companion, which can be recast for free thanks to its affinity for artifacts. Every time it enters the battlefield, Radagast, Wizard of Wilds triggers because the spell's mana value is 5 or greater, which normally yields a pair of tokens that Parallel Lives promptly doubles into four. By sacrificing those tokens to Phyrexian Altar, you generate the exact green and colorless mana needed to fuel Temur Sabertooth's activation. You then use Temur Sabertooth to bounce Sojourner's Companion back to your hand, allowing you to replay the artifact creature for free and repeat the entire cycle for boundless sacrifice triggers, storm count, and creature movement.