Teferi, Mage of Zhalfir, and Possibility Storm

Prerequisites

• Teferi, Mage of Zhalfir on the battlefield
• Possibility Storm on the battlefield

Steps

1. When an opponent casts a card from their hand, Possibility Storm will exile it
2. Teferi only allows opponent to cast spells at sorcery speed, thus forbidding them from playing any spells allowed by Possibility Storm

Results

• Exile all spells cast by opponents from their hand
• Opponents cannot play cards exiled by Possibility Storm