Errant, Street Artist + Dramatic Reversal + Twincast

Errant, Street Artist

Dramatic Reversal

Twincast

How it works

1. Activate all mana producing nonland permanents you control by tapping them, adding at least 2.
2. Cast Dramatic Reversal by paying 1.
3. Holding priority, cast Twincast by paying , creating a copy of Dramatic Reversal.
4. Activate Errant by paying 1 and tapping it, creating a copy of the Dramatic Reversal copy.
5. Resolve the first Dramatic Reversal copy, untapping all nonland permanents you control.
6. Activate all mana producing nonland permanents you control by tapping them, adding at least 2.
7. Repeat from step 4.