Nether Traitor + Kheru Goldkeeper + Altar of Dementia + Insidious Roots

Nether Traitor

Kheru Goldkeeper

Altar of Dementia

Insidious Roots

How it works

1. Activate Altar of Dementia by sacrificing Nether Traitor.
2. Activate Altar of Dementia by sacrificing another creature.
3. When the creature dies, Nether Traitor triggers, causing you to pay to return Nether Traitor from your graveyard to the battlefield.
4. Kheru Goldkeeper and Insidious Roots triggers, creating a Treasure token, a 1/1 Plant creature token and putting a +1/+1 counter on each Plant you control.
5. Resolve the Altar of Dementia ability.
6. Activate the Treasure by tapping and sacrificing it, adding .
7. Repeat.