Crackdown Construct + Endling + Song of Freyalise

BG identity

Commander legal

The 3 combo pieces

What must be in place

Endling does not have summoning sickness.
Song of Freyalise has one or two lore counters on it.

How to execute it

  1. Activate Endling by tapping it, adding {B}.
  2. Activate Endling's first ability by paying {B}.
  3. Crackdown Construct triggers, giving itself +1/+1 until end of turn.
  4. Resolve the Endling ability, untapping it.
  5. Repeat.

What the combo produces