Crystalline Crawler + Gravecrawler + Szarel, Genesis Shepherd + Yahenni, Undying Partisan

Mana needed: {B}

BRG identity

Commander legal

The 4 combo pieces

How to execute it

  1. Cast Gravecrawler from your graveyard by paying its mana cost.
  2. Activate Yahenni by sacrificing Gravecrawler.
  3. When Gravecrawler is sacrificed, Szarel triggers, putting a number of +1/+1 counters equal to Szarel's power on Crystalline Crawler.
  4. Resolve the Yahenni ability.
  5. Activate Crystalline Crawler by removing a +1/+1 counter from it, adding {B}.
  6. Repeat.

What the combo produces