Arahbo, the First Fang + Whitemane Lion + Phyrexian Altar + Primeval Bounty

Arahbo, the First Fang

Whitemane Lion

Phyrexian Altar

Primeval Bounty

How it works

1. Cast Whitemane Lion by paying 1.
2. Primeval Bounty's first ability triggers, creating a 3/3 Beast creature token.
3. When Whitemane Lion enters the battlefield, it and Arahbo trigger.
4. Resolve the Whitemane Lion trigger, returning it from the battlefield to your hand.
5. Resolve the Arahbo trigger, creating a 1/1 Cat creature token.
6. Activate Phyrexian Altar twice by sacrificing the Cat and Beast, adding 1.
7. Repeat.