the front side of Greenweaver Druid
the back of a classic MtG card
the front side of Umbral Mantle
the back of a classic MtG card
the front side of Training Grounds
the back of a classic MtG card

Color Identity: G, U

Initial Card State

  1.  All permanents on the battlefield.

Notable Prerequisites

  1. Umbral Mantle attached to Greenweaver Druid.
  2. Greenweaver Druid does not have summoning sickness.

Steps

  1. Activate Greenweaver Druid by tapping it, adding one green manaone green mana.
  2. Activate Greenweaver Druid by paying one generic mana and untapping it, giving itself +2/+2 until end of turn.
  3. Repeat.

Results

  1. Infinitely large creature until end of turn.
  2. Infinite green mana.
  3. Infinite untap of creatures you control.
  4. Infinite mana creatures you control can produce.
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