Color Identity: W, B, G

Prerequisites

  1.  
    Necrotic Ooze
    Necrotic Ooze
    on the battlefield.
  2.  
    Boa Constrictor
    Boa Constrictor
    and
    Barrenton Medic
    Barrenton Medic
    in your graveyard.
  3. Necrotic Ooze
    Necrotic Ooze
    does not have summoning sickness.
  4. It is your precombat main phase.

Steps

  1. Activate
    Necrotic Ooze
    Necrotic Ooze
    using
    Boa Constrictor
    Boa Constrictor
    's ability by tapping it, giving it +3/+3 until end of turn.
  2. Activate
    Necrotic Ooze
    Necrotic Ooze
    using
    Barrenton Medic
    Barrenton Medic
    's second ability by putting a -1/-1 counter on it, untapping it.
  3. Repeat.

Results

  1. Infinitely large
    Necrotic Ooze
    Necrotic Ooze
    until end of turn.

Metadata

  1. In 0 decks according to EDHREC.
footer