Urban Daggertooth + Herd Baloth + Pandemonium

Urban Daggertooth
Herd Baloth
Pandemonium

Requires
Urban Daggertooth must be on the battlefield. Herd Baloth must be on the battlefield. Pandemonium must be on the battlefield. You have a way to give Urban Daggertooth indestructible. You have a way to put a +1/+1 counter on Herd Baloth.
Steps
  1. Give Urban Daggertooth indestructible.
  2. Put a +1/+1 counter on Herd Baloth.
  3. Herd Baloth triggers, creating a 4/4 Beast creature token.
  4. The Beast enters the battlefield, triggering Pandemonium, dealing 4 damage to Urban Daggertooth.
  5. Urban Daggertooth triggers, putting a +1/+1 counter on Herd Baloth.
  6. Repeat from step 3.
Results
Infinite +1/+1 counters on Herd Baloth and Urban Daggertooth. Infinite creature tokens. Infinite ETB. Infinite proliferate.

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