Chakram Retriever + Mystic Speculation + Nardole, Resourceful Cyborg

U identity

Commander legal

The 3 combo pieces

What must be in place

Nardole has at least three counters on it.
Nardole does not have summoning sickness.

How to execute it

  1. Activate Nardole by tapping it, adding at least {U}{U}{U} that can only be spent to cast noncreature spells.
  2. Cast Mystic Speculation with buyback by paying {2}{U}.
  3. Chakram Retriever triggers, untapping Nardole.
  4. Resolve Mystic Speculation, causing you to scry 3 and return Mystic Speculation to your hand.
  5. Repeat.
  6. If Nardole has at least four counters on it, this combo nets infinite {U} that can only be spent to cast noncreature spells, and you may target any other creature using Chakram Retriever's trigger.

What the combo produces