Alesha, Who Smiles at Death + Crystalline Crawler + Aggravated Assault + Arcbound Overseer + Woe Strider

Alesha, Who Smiles at Death

Crystalline Crawler

Aggravated Assault

Arcbound Overseer

Woe Strider

How it works

1. Activate Crystalline Crawler's second ability by tapping it, putting a +1/+1 counter on it.
2. Activate Woe Strider by sacrificing Arcbound Overseer.
3. When Arcbound Overseer dies, it triggers, putting its +1/+1 counters on Crystalline Crawler.
4. Resolve the Woe Strider ability.
5. Activate Crystalline Crawler's first ability five times by removing five +1/+1 counters from it, adding 3.
6. Activate Aggravated Assault by paying 3, causing you to untap all creatures you control and to get an additional combat and main phase after this one.
7. Declare Alesha as an attacker, triggering its ability, targeting Arcbound Overseer.
8. Activate Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding W/BW/B.
9. Resolve the Alesha trigger, causing you to pay W/BW/B to return Arcbound Overseer from your graveyard to the battlefield tapped and attacking with six +1/+1 counters on it due to its modular ability.
10. Repeat.

This intricate loop turns the graveyard into a revolving door for heavy metal by letting Crystalline Crawler act as a mana battery that funds Aggravated Assault. Whenever Crystalline Crawler's counters run dry, you feed Arcbound Overseer to Woe Strider, whose modular ability shifts a massive pile of counters back onto the Crawler while Alesha, Who Smiles at Death gleefully plucks the Overseer right back out of the graveyard to attack again. It's a gorgeous loop of sacrifice, resurrection, and infinite combat phases that keeps your board churning endlessly.