Requires

Ayula, Queen Among Bears must be on the battlefield. Herd Baloth must be in hand. Arcane Adaptation must be on the battlefield. Arcane Adaptation on the battlefield with "Bear" chosen. Mana needed:

Steps

1. Cast Herd Baloth by paying .
2. When Herd Baloth enters the battlefield as a Bear due to Arcane Adaptation, Ayula triggers, putting two +1/+1 counters on Herd Baloth.
3. Herd Baloth triggers, creating a 4/4 Beast creature token.
4. When the Beast enters the battlefield as a Bear due to Arcane Adaptation, Ayula triggers, putting two +1/+1 counters on Herd Baloth.
5. Repeat from step 3.

Results