Deranged Hermit + Temur Sabertooth + Phyrexian Altar + Primal Vigor

Deranged Hermit

Temur Sabertooth

Phyrexian Altar

Primal Vigor

How it works

1. Cast Deranged Hermit by paying 3.
2. When Deranged Hermit enters the battlefield, it triggers, creating eight 1/1 Squirrel creature tokens.
3. Activate Phyrexian Altar seven times by sacrificing seven Squirrels, adding 4.
4. Activate Temur Sabertooth by paying 1, returning Deranged Hermit to your hand from the battlefield.
5. Repeat.

This elegant loop turns the humble squirrel into an unstoppable engine by leveraging Primal Vigor to double the token output of Deranged Hermit from four to eight whenever it enters the battlefield. With that massive influx of critters, you can feed seven of them to Phyrexian Altar to generate the necessary mana, leaving you with enough leftover resources to fund Temur Sabertooth's activation cost and bounce Deranged Hermit right back to your hand. Because Deranged Hermit's static lord effect and the token-doubling of Primal Vigor create a massive surplus of value each cycle, you can easily recast the Hermit to repeat the process indefinitely for infinite mana, tokens, and death triggers.