Chakram Retriever + Elite Arcanist + Pact of the Titan + Warstorm Surge

UR identity

Commander legal

The 4 combo pieces

What must be in place

Elite Arcanist does not have summoning sickness.
It is your turn.

How to execute it

  1. Activate Elite Arcanist by paying {0} and tapping it, casting a copy of Pact of the Titan without paying its mana cost.
  2. Chakram Retriever triggers, untapping Elite Arcanist.
  3. Resolve Pact of the Titan, creating a 4/4 Giant creature token.When the Giant enters the battlefield, Warstorm Surge triggers, dealing damage equal to the Giant's power to any target.
  4. Repeat.

What the combo produces