Agatha's Soul Cauldron + Kelpie Guide + Neerdiv, Devious Diver

U identity

Commander legal

The 3 combo pieces

What must be in place

You control another creature that does not have summoning sickness and that has a +1/+1 counter on it.

How to execute it

  1. Activate a creature using Kelpie Guide's ability by tapping it, untapping Neerdiv.
  2. Activate Neerdiv using Kelpie Guide's ability by tapping it.
  3. Neerdiv triggers, causing a player to mill cards equal to its power.
  4. Resolve the Neerdiv ability from step 2, untapping another creature.
  5. Repeat.

What the combo produces