Saffi Eriksdotter + Body Launderer + Umbral Collar Zealot

Saffi Eriksdotter

Body Launderer

Umbral Collar Zealot

How it works

1. Activate Saffi by sacrificing it, targeting Body Launderer.
2. When Saffi dies, Body Launderer's first ability triggers, causing it to connive.
3. Activate Umbral Collar Zealot by sacrificing Body Launderer.
4. When Body Launderer dies, its second ability and Saffi trigger.
5. Resolve the Saffi trigger, returning Body Launderer from your graveyard to the battlefield.
6. Resolve the Body Launderer trigger, returning Saffi from your graveyard to the battlefield.
7. Resolve the Umbral Collar Zealot ability.
8. Repeat.