Malcolm, Keen-Eyed Navigator + Magmaw + Rukarumel, Biologist + Worldwalker Helm

Malcolm, Keen-Eyed Navigator

Magmaw

Rukarumel, Biologist

Worldwalker Helm

How it works

1. Activate Magmaw by paying 1 and sacrificing another nonland permanent, dealing 1 damage to an opponent.
2. Malcolm triggers, creating a Treasure and Map token.
3. Activate the Treasure by tapping and sacrificing it, adding 1.
4. Repeat.