Alena, Kessig Trapper + Pili-Pala + Rex, Cyber-Hound

URW identity

Commander legal

The 3 combo pieces

What must be in place

You had a creature with power 2 or greater enter the battlefield this turn.
Rex does not have summoning sickness.
Alena and Pili-Pala exiled with a brain counter on them.

How to execute it

  1. Activate Rex using Alena's ability by tapping it, adding at least {R}{R}.
  2. Activate Rex using Pili-Pala's ability by paying {2} and untapping it, adding one mana of any color.
  3. Repeat.

What the combo produces