Boonweaver Giant + Altar of Dementia + Necrogen Communion

Boonweaver Giant

Altar of Dementia

Necrogen Communion

How it works

1. Activate Altar of Dementia by sacrificing Boonweaver Giant
2. When Boonweaver Giant dies, Necrogen Communion triggers, returning Boonweaver Giant from your graveyard to the battlefield
3. When Boonweaver Giant enters, it triggers, returning Necrogen Communion from your graveyard to the battlefield attached to Boonweaver Giant.
4. Resolve the Altar of Dementia ability from step 1.
5. Repeat.

This elegant loop relies on the recursive partnership between Boonweaver Giant and Necrogen Communion, where the giant's arrival continuously fetches its own resurrection enchantment directly from the graveyard. Because Necrogen Communion safely brings the giant right back whenever it perishes, Altar of Dementia provides a reliable outlet to repeatedly sacrifice the Giant before milling your entire library into the graveyard. Every iteration triggers both entry and death effects, turning this simple pairing into an infinite engine for endless sacrifices and self-mill.