Requires

Cloudstone Curio must be on the battlefield. Village Bell-Ringer must be in hand. Incubation Druid must be on the battlefield. Hidden Herbalists must be on the battlefield. Incubation Druid has at least one +1/+1 counter on it. You control at least one land that can tap for white mana. Mana needed:

Steps

1. Tap Incubation Druid to cast Village Bell-Ringer.
2. When Village Bell-Ringer ETBs, Cloudstone Curio and Village Bell-Ringer trigger.
3. Resolve the Village Bell-Ringer trigger, untapping all creatures you control.
4. Resolve the Cloudstone Curio, returning Hidden Herbalists to your hand.
5. Cast Hidden Herbalists for .
6. When Hidden Herbalists ETBs, Cloudstone Curio and Hidden Herbalists trigger.
7. Resolve the Hidden Herbalists trigger, adding .
8. Resolve the Cloudstone Curio trigger, returning Village Bell-Ringer to your hand.
9. Repeat.

Results