Alela, Artful Provocateur + Cathars' Crusade + Ancestral Statue + Workhorse + Yarok, the Desecrated

Alela, Artful Provocateur

Cathars' Crusade

Ancestral Statue

Workhorse

Yarok, the Desecrated

How it works

1. Cast Ancestral Statue by paying 4.
2. Alela triggers, creating a 1/1 Faerie creature token.
3. When the Faerie enters the battlefield, Cathars' Crusade triggers twice, putting two +1/+1 counters on each creature you control.
4. When Ancestral Statue enters the battlefield, it and Cathars' Crusade trigger twice.
5. Resolve the Ancestral Statue triggers, returning it and the Faerie from the battlefield to your hand.
6. Resolve the Cathars' Crusade triggers, putting two +1/+1 counters on each creature you control.
7. Activate Workhorse four times by removing four +1/+1 counters from it, adding CCCC.
8. Repeat.

This ingenious loop leverages Ancestral Statue as a self-bouncing engine that endlessly re-enters the battlefield to fuel your win conditions. Yarok, the Desecrated doubles every single entry trigger along the way, supercharging Cathars' Crusade so that your entire team grows exponentially larger with each iteration. Meanwhile, Alela, Artful Provocateur turns every cast of the Statue into a steady stream of flying Faerie tokens, and Workhorse acts as a convenient mana battery that can cash in its counters to sustain the casting cost of the loop.