Knowledge Pool + Vexing Bauble

C identity

Commander legal

The 2 combo pieces

• Knowledge Pool
• Vexing Bauble

How to execute it

1. Whenever a player casts a spell from their hand, Knowledge Pool triggers, exiling the spell and allowing the player to cast another card exiled by Knowledge Pool without paying its mana cost.
2. If the player chooses to cast a spell, Vexing Bauble triggers, countering that spell since no mana was spent to cast it.

What the combo produces

• Counter all spells players cast from their hands
• Lock