Turnabout + Twincast + Izzet Guildmage

Turnabout

Twincast

Izzet Guildmage

How it works

1. Cast Turnabout for 2.
2. In response, Cast Twincast targeting Turnabout for .
3. In response, Activate Izzet Guildmage's ability for 2 targeting Twincast.
4. Resolve the Izzet Guildmage's activated ability to copy Twincast targeting Turnabout with the copy of Twincast.
5. Resolve the copy of Turnabout, created by the copy of Twincast to untap your lands that can produce at least 3.
6. Repeat.