Artificial Evolution + Cryptolith Rite + Judge of Currents + Lurking Roper

Mana needed: {U}

GWU identity

Commander legal

The 4 combo pieces

What must be in place

Lurking Roper does not have summoning sickness.

How to execute it

  1. Cast Artificial Evolution by paying {U}, changing all instances of "Merfolk" on Judge of Currents to "Horror" until end of turn.
  2. Activate Lurking Roper by tapping it, adding one mana of any color.
  3. Judge of Currents triggers, causing you to gain 1 life.
  4. Lurking Roper triggers, untapping itself.
  5. Repeat.

What the combo produces