the front side of Enduring Scalelord
the back of a classic MtG card
the front side of Undercover Operative
the back of a classic MtG card
the front side of Cathars' Crusade
the back of a classic MtG card

Color Identity: G, W, U

Initial Card State

  1.  Undercover Operative in hand.
  2.  Enduring Scalelord and Cathars' Crusade on the battlefield.

Mana Needed

  1. two generic manaone blue manaone blue mana available.

Steps

  1. Cast Undercover Operative by paying two generic manaone blue manaone blue mana, choosing to have it enter the battlefield as a copy of Enduring Scalelord.
  2. Undercover Operative enters the battlefield, triggering Cathars' Crusade, putting a +1/+1 counter on each creature you control.
  3. Enduring Scalelord and Undercover Operative triggers.
  4. Resolve the Undercover Operative trigger, putting a +1/+1 counter on itself.
  5. Enduring Scalelord triggers, putting a +1/+1 counter on itself.
  6. Repeat from step 4.

Results

  1. Infinite +1/+1 counters on certain creatures.
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