the front side of Katsumasa, the Animator
the back of a classic MtG card
the front side of Aetherflux Reservoir
the back of a classic MtG card

Color Identity: U

Initial Card State

  1.  Katsumasa and Aetherflux Reservoir on the battlefield.

Notable Prerequisites

  1. You have a way to give Aetherflux Reservoir lifelink.
  2. Your life total is at least 51.

Mana Needed

  1. ({2} magic symbol)  ({U} magic symbol)   available.

Steps

  1. Activate Katsumasa by paying ({2} magic symbol)  ({U} magic symbol)  , causing Aetherflux Reservoir to become an artifact creature until end of turn.
  2. Give Aetherflux Reservoir lifelink.
  3. Activate Aetherflux Reservoir by paying 50 life, dealing 50 damage to any target and causing you to gain 50 life.
  4. Repeat step 3.

Results

  1. Infinite damage.
  2. Infinite lifegain triggers.

Metadata

  1. In 377 decks according to EDHREC.
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