Pattern of Rebirth + Mortuary + Boonweaver Giant + Carrion Feeder

Pattern of Rebirth

Mortuary

Boonweaver Giant

Carrion Feeder

How it works

1. Activate Carrion Feeder 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 Carrion Feeder ability from step 1, putting a +1/+1 counter on it.
7. Repeat.

This elegant loop turns the cycle of life and death into an endless engine, fueled by Carrion Feeder's ability to instantly sacrifice Boonweaver Giant. As the giant falls, Mortuary quietly catches it and places it straight onto your library, while Pattern of Rebirth snaps into action to immediately tutor that exact same Boonweaver Giant right back onto the battlefield. When the giant arrives, its own entry trigger reaches into your graveyard to rescue Pattern of Rebirth and reattach it, leaving the board primed to repeat the entire sequence while growing Carrion Feeder to infinitely large proportions.