Krark-Clan Grunt + Prototype Portal + Ugin's Nexus

Mana needed: {5} each turn

R identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate Prototype Portal by paying {5} and tapping it, creating a token copy of Ugin's Nexus.
  2. Activate Krark-Clan Grunt by acrificing the Ugin's Nexus token.
  3. The Ugin's Nexus token is exiled instead of being put into your graveyard, causing you to take an extra turn after this one.
  4. Resolve the Krark-Clan Grunt ability.
  5. Repeat each turn.

What the combo produces