Eternal Witness + Priest of Gix + Victimize + Insidious Roots + Yahenni, Undying Partisan

Eternal Witness

Priest of Gix

Victimize

Insidious Roots

Yahenni, Undying Partisan

How it works

1. Activate Yahenni twice by sacrificing Priest of Gix and Eternal Witness.
2. Cast Victimize by paying 2 and sacrificing another creature, returning Eternal Witness and Priest of Gix from your graveyard to the battlefield.
3. When Priest of Gix and Eternal Witness enter, they each trigger as well as Insidious Roots.
4. Resolve the Priest of Gix trigger, adding .
5. Resolve the Insidious Roots trigger, creating a creature token and putting a +1/+1 counter on each Plant you control
6. Resolve the Eternal Witness trigger, returning Victimize from your graveyard to your hand.
7. Repeat.