Crab Umbra + Pentad Prism + Tromell, Seymour's Butler

Mana needed: {1}

GU identity

Commander legal

The 3 combo pieces

What must be in place

You have had five nontoken creatures enter the battlefield under your control this turn.

How to execute it

  1. Activate Tromell by paying {1} and tapping it, causing you to put at least five charge counters on Pentad Prism.
  2. Activate Pentad Prism five times by removing five charge counters from it, adding {4}{U}.
  3. Activate Crab Umbra by paying {2}{U}, untapping Tromell.
  4. Repeat.

What the combo produces