Cavern Harpy + Mirror Room // Fractured Realm + Peregrine Drake

Mana needed: {1} at most

UB identity

Commander legal

The 3 combo pieces

What must be in place

Fractured Realm is unlocked.

How to execute it

  1. Activate up to five lands by tapping them, adding at least {2}{U}{B}.
  2. Cast Peregrine Drake by paying its mana cost.
  3. When Peregrine Drake enters, it triggers twice. Resolve the first trigger, untapping five lands.
  4. Holding priority, activate up to five lands by tapping them, adding at least {2}{U}{B}.
  5. Resolve the second Peregrine Drake trigger, untapping five lands.
  6. Cast Cavern Harpy by paying its mana cost.
  7. When Cavern Harpy enters, it triggers twice, returning it and Peregrine Drake from the battlefield to your hand.
  8. Repeat.

What the combo produces