Gerrard, Weatherlight Hero + Blade of Shared Souls + Ashnod's Altar + Eternal Scourge

Gerrard, Weatherlight Hero

Blade of Shared Souls

Ashnod's Altar

Eternal Scourge

How it works

1. Activate Ashnod's Altar twice by sacrificing three nontoken creatures, adding CCCCCC.
2. Cast Eternal Scourge by paying 3.
3. Activate Blade of Shared Souls' equip ability by paying 2, attaching it to Eternal Scourge.
4. Blade of Shared Souls triggers, causing Eternal Scourge to become a copy of Gerrard.
5. Put Eternal Scourge into your graveyard due to the legend rule.
6. When Eternal Scourge dies as a copy of Gerrard, it triggers, exiling itself and returning all other artifact and creature cards put into your graveyard this turn to the battlefield.
7. Repeat.