Rules FAQ
- Insidious Scheme is a reaction to claim being applied (step C in DUCK), unlike most other reactions that are played immediately after the winner is determined (step D in DUCK)
Reaction: After claim is applied for an challenge you won by 5 or more STR, draw 2 cards. (4 cards instead if the losing opponent has no cards in his or her hand.)
Link: Decklists
Rules FAQ