Theorist's Proxy (FRA-044) [Reality Fracture]

Flash

When this creature enters, empower Jace 3. (Put three loyalty counters on a Jace token you control. If you don't control one, first create a blue Jace planeswalker token with "[-1]: Surveil 1" and "[-3]: Draw a card.")

U, Sacrifice this creature: The next spell you cast this turn can't be countered.