Gerrard, Weatherlight Hero + Blade of Shared Souls + Phyrexian Altar + Misthollow Griffin

Gerrard, Weatherlight Hero

Blade of Shared Souls

Phyrexian Altar

Misthollow Griffin

How it works

1. Activate Phyrexian Altar six times by sacrificing six additional nontoken creatures, adding 4.
2. Cast Misthollow Griffin by paying 2.
3. Activate Blade of Shared Souls' equip ability by paying 2, attaching it to Misthollow Griffin.
4. Blade of Shared Souls triggers, causing Misthollow Griffin to become a copy of Gerrard.
5. Put Misthollow Griffin in the graveyard due to the legend rule.
6. When Misthollow Griffin 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.
8. If you control a seventh additional nontoken creature, you may sacrifice it as well each loop to get infinite colored mana.