the front side of Mnemonic Wall
the back of a classic MtG card
the front side of Crystal Shard
the back of a classic MtG card
the front side of Time Warp
the back of a classic MtG card

Color Identity: U

Initial Card State

  1.  Crystal Shard on the battlefield.
  2.  Mnemonic Wall and Time Warp in hand.

Mana Needed

  1. five generic manaone blue manaone blue manaone blue manaone blue manaone blue mana each turn available.

Steps

  1. Cast Time Warp by paying three generic manaone blue manaone blue mana, taking an extra turn after this one.
  2. Cast Mnemonic Wall by paying four generic manaone blue mana.
  3. Mnemonic Wall enters the battlefield, returning Time Warp from your graveyard to your hand.
  4. Activate Crystal Shard by paying one blue mana and tapping it, returning Mnemonic Wall from the battlefield to your hand.
  5. Repeat each turn.

Results

  1. Infinite turns.
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