Pattern of Rebirth + Mortuary + Boonweaver Giant + Viscera Seer

Pattern of Rebirth

Mortuary

Boonweaver Giant

Viscera Seer

How it works

1. Activate Viscera Seer by sacrificing Boonweaver Giant.
2. When Boonweaver Giant dies, Mortuary and Pattern of Rebirth trigger.
3. Resolve the Mortuary trigger, putting Boonweaver Giant on the bottom of your library from your graveyard.
4. Resolve the Pattern of Rebirth trigger, putting Boonweaver Giant from your library onto the battlefield.
5. When Boonweaver Giant enters the battlefield, it triggers, returning Pattern of Rebirth from your graveyard to the battlefield attached to Boonweaver Giant.
6. Resolve the Viscera Seer ability from step 1, causing you to scry 1.
7. Repeat.

This intricate loop turns Boonweaver Giant into an endless, self-sustaining engine by exploiting the interaction between your graveyard and library. When you sacrifice the Giant to Viscera Seer, Mortuary instantly redirects it back to the top of your library just in time for Pattern of Rebirth to pluck it right back onto the battlefield. Meanwhile, the Giant's own enter-the-battlefield trigger continuously rescues Pattern of Rebirth from the graveyard and reattaches it to the Giant, ready to do it all over again.