MTG Combo: Jace, the Mind Sculptor + Teferi, Temporal Archmage + The Chain Veil
If you had Teferi at at least 5 loyalty and Jace at at least 2 when you start your turn, you could, if you had a total of 9 mana, +2 Jace and -1 Teferi choosing the Chain Veil as one of them and continuously activating Chain Veil until Jace ulted.