Requires

Yenna, Redtooth Regent must be on the battlefield. Three Blind Mice must be on the battlefield. Vorinclex, Monstrous Raider must be on the battlefield. Yenna does not have summoning sickness. Mana needed:

Steps

1. Activate Yenna by paying and tapping it, creating a token copy of Three Blind Mice.
2. The Three Blind Mice token enters the battlefield with two lore counters on it due to Vorinclex, triggering its first and second chapter abilities.
3. Resolve the first Three Blind Mice trigger, creating a 1/1 Mouse creature token.
4. Resolve the next Three Blind Mice trigger, creating a token copy of the Three Blind Mice token.
5. Repeat from step 2.

Results