Rule · Chapter 1
cr:1.7.6
A connected ability pair is a pair of abilities where the parameters and/or events of one connected ability (leading ability) are specifically referred to by the effect(s) of the other connected ability (following ability).
Example: Reckless Swing has the text “As an additional cost to play this, discard a random card,” which is a leading play-static ability that requires the player to discard a card, and “If the discarded card has 6 or more {p}, deal 2 damage to the attacking hero,” which is a following resolution ability with an effect that directly refers to the card discarded from the event generated by an effect in the leading ability.