Twintania, Riftborn Catalyst

Flying, Vigilance

Whenever you cast a noncreature spell, choose one —
• Tap up to two target permanents. They don’t untap during their controller’s next untap step.
• Twintania deals 4 damage to any target.
• You gain 4 life.

At the beginning of your upkeep, if you’ve cast three or more noncreature spells since your last turn, exile Twintania, then return it to the battlefield transformed under your control.