If you're using a dwarf cannon you might need to take exception to this rule since you will be attacked by more than 1 demon anyway.
Top Choices of Buy RS Gold Lesser Demon

By participating in the game of 3 Patti, players can benefit not only in terms of entertainment and social interaction but also in developing various skills and qualities that can have a positive impact on their personal and professional lives Website. Whether played for fun or with a competitive spirit, 3 Patti offers a range of advantages that make it a popular choice among card game enthusiasts.