the front side of Karn, Silver Golem
the back of a classic MtG card
the front side of Chromatic Orrery
the back of a classic MtG card
the front side of Umbral Mantle
the back of a classic MtG card

Color Identity: C

Initial Card State

  1.  All permanents on the battlefield.

Notable Prerequisites

  1. Chromatic Orrery does not have summoning sickness.

Steps

  1. Activate Chromatic Orrery's first ability by tapping it, adding five generic mana.
  2. Activate Karn by paying one generic mana, causing Chromatic Orrery to become an artifact creature until end of turn.
  3. Activate Umbral Mantle's equip ability by paying zero mana, attaching it to Chromatic Orrery.
  4. Activate Chromatic Orrery by paying three generic mana and untapping it, giving it +2/+2 until end of turn.
  5. Activate Chromatic Orrery's first ability by tapping it, adding five generic mana.
  6. Repeat from step 4.
  7. Once you have infinite mana, you may instead use Chromatic Orrery's second ability if you control a colored permanent.

Results

  1. Infinite card draw.
  2. Infinite colored mana.
  3. Infinite colorless mana.
  4. Infinite draw triggers.
  5. Infinitely large creature until end of turn.
  6. Infinite untap of creatures you control.
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