Rule · Chapter 1
cr:1.0.2
A restriction is a rule or effect that states something cannot happen. A requirement is a rule or effect that states that something should happen if possible. An allowance is a rule or effect that states something can happen. A restriction takes precedence over any requirement or allowance, and a requirement takes precedence over any allowance, subject to [1.0.1a] .
Example: “They can’t defend this with equipment” is a restriction, “They must defend this with equipment they control if able” is a requirement, and “They may defend this with equipment they control” is an allowance.
Example: If one effect reads “You can’t play cards from your banished zone,” and another effect reads “You may play cards from your banished zone,” the restriction takes precedence over the allowance and the player cannot play cards from their banished zone.