Ashnod's Altar + Eternal Witness + Kenrith, the Returned King + Temporal Manipulation

Mana needed: {5}{U}{U}{B} each turn

WUBRG identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Ashnod's Altar by sacrificing Eternal Witness, adding {C}{C}.
  2. Activate Kenrith's last ability by paying {4}{B}, returning Eternal Witness from your graveyard to the battlefield.
  3. Eternal Witness enters the battlefield, returning Temporal Manipulation from your graveyard to your hand.
  4. Cast Temporal Manipulation by paying {3}{U}{U}, causing you to take an extra turn after this one.
  5. Repeat.

What the combo produces