Subrule · Chapter 1
cr:1.0.2a
A restriction that states that “only” something can happen is functionally equivalent to a restriction that states everything else cannot happen.
Example: Three of a Kind has the text “you may only play cards from arsenal,” which is a restriction equivalent to “you cannot play cards from anywhere other than arsenal.” Even if an effect would allow you to play a card from your banished zone (an allowance), or require you to play your next card from hand (a requirement) you would not be able to play that card because of the restriction effect generated by Three of a Kind.