Dualcaster Mage + Heat Shimmer

Dualcaster Mage
Heat Shimmer

Requires
Both cards in hand. You control at least one creature. 3rrr available.
Steps
  1. Cast Heat Shimmer by paying 2r
  2. Holding priority, cast Dualcaster Mage by paying 1rr
  3. Dualcaster Mage enters the battlefield, copying Heat Shimmer
  4. Resolve the copied Heat Shimmer, creating a token copy of Dualcaster Mage
  5. Repeat from step 3
Results
Infinite creature tokens with haste. Infinite ETB. Infinite magecraft triggers.