Alela, Artful Provocateur + Cathars' Crusade + Ancestral Statue + Crystalline Crawler + Panharmonicon

Alela, Artful Provocateur

Cathars' Crusade

Ancestral Statue

Crystalline Crawler

Panharmonicon

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 Crystalline Crawler's first ability four times by removing four +1/+1 counters from it, adding 4.
8. Repeat.

This ingenious loop turns a harmless mechanical stack into an overwhelming engine of growth by constantly replaying Ancestral Statue to trigger your entire board. Alela, Artful Provocateur provides the initial spark by turning each cast into a Faerie token, which in turn sets off Cathars' Crusade to permanently bolster your forces. Meanwhile, Panharmonicon doubles every single entry trigger, allowing you to easily bounce the Statue right back to your hand while feeding the mana required to keep the chain alive. Crystalline Crawler acts as the ultimate battery for this assembly line, absorbing the staggering influx of counters and converting them into the exact {4} mana needed to recast Ancestral Statue over and over again.