How can you create a combo with Knowledge Pool, Eidolon of Rhetoric?
user
[START OF COMBO]This combo can be formed with Knowledge Pool, Eidolon of Rhetoric

Color identity: W
Mana cost: 
Steps:
  1. Whenever a player casts a spell from their hand, Knowledge Pool triggers, exiling that spell.
  2. Because Eidolon of Rhetoric prevents players from casting more than one spell each turn, players cannot cast the spell permitted by Knowledge Pool, or any other spell that turn[END OF COMBO STEPS]

Result:
  - Exile all spells cast from a player's hand
  - Players can only cast one spell per turn[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
assistant