the front side of Thran Dynamo
the back of a classic MtG card
the front side of Umbral Mantle
the back of a classic MtG card
the front side of Karn's Touch
the back of a classic MtG card

Color Identity: U

Initial Card State

  1.  Karn's Touch in hand.
  2.  Thran Dynamo and Umbral Mantle on the battlefield.

Notable Prerequisites

  1. Thran Dynamo does not have summoning sickness.

Mana Needed

  1. one blue manaone blue mana available.

Steps

  1. Cast Karn's Touch by paying one blue manaone blue mana, targeting Thran Dynamo.
  2. Activate Umbral Mantle's equip ability by paying zero mana, attaching it to the Thran Dynamo.
  3. Activate Thran Dynamo by tapping it, adding one colorless manaone colorless manaone colorless mana.
  4. Activate Umbral Mantle by paying three generic mana and untapping it, giving itself +2/+2 until end of turn.
  5. Repeat.

Results

  1. Infinitely large creature until end of turn.
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