the front side of Gilder Bairn
the back of a classic MtG card
the front side of Song of Freyalise
the back of a classic MtG card
the front side of Biomancer's Familiar
the back of a classic MtG card

Color Identity: G, U

Initial Card State

  1.  All permanents on the battlefield.

Notable Prerequisites

  1. Gilder Bairn does not have summoning sickness.
  2. Song of Freyalise has exactly one or two lore counters on it.

Steps

  1. Activate Gilder Bairn by tapping it, adding ({GU} magic symbol)  .
  2. Activate Gilder Bairn by paying ({GU} magic symbol)   and untapping it, doubling each counter on target permanent.
  3. Repeat.

Results

  1. Infinite proliferate.

Metadata

  1. In 11 decks according to EDHREC.
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