Muldrotha, the Gravetide + Narset's Reversal + Slick Imitator + Time Walk

Mana needed: {2}{U}{U}{U} plus enough mana to cast the extra turn spell each turn

BGU identity

The 4 combo pieces

What must be in place

You have max speed.

How to execute it

  1. Cast Time Walk by paying its mana cost.
  2. Holding priority, cast Narset's Reversal by paying {U}{U}, targeting Time Walk.
  3. Holding priority, activate Slick Imitator by paying {1} and sacrificing it, copying Narset's Reversal, with the copy targeting the original Narset's Reversal.
  4. Resolve the copy of Narset's Reversal, copying the original Narset's Reversal targeting Time Walk, and returning the original Narset's Reversal to your hand.
  5. Resolve Time Walk, causing you to take an extra turn after this one.
  6. Cast Slick Imitator from your graveyard by paying {1}{U}.
  7. Repeat each turn.

What the combo produces