Volo, Guide to Monsters + Errant, Street Artist + Intruder Alarm

Volo, Guide to Monsters

Errant, Street Artist

Intruder Alarm

How it works

1. Cast a creature spell by paying its mana cost.
2. Volo triggers, copying that spell.
3. Tap creatures to add at least 1.
4. Pay 1 and tap Errant to activate her, copying the copied creature spell.
5. Let one copy of the creature spell resolve.
6. Intruder Alarm triggers, untapping all creatures.
7. Repeat from step 3.