Each creature you control with an
exhaustExhaust is a keyword that adds additional rules to the activated ability that follows it. “Exhaust — [Cost]: [Effect]” means “[Cost]: [Effect]. Activate only once.”
An effect may allow you to take an action as long as you haven’t activated an exhaust ability this turn. Such an effect allows that action only if you haven’t begun to activate an exhaust ability this turn. (CR 702.177) ability has
hasteHaste is a static ability.
If a creature has haste, it can attack even if it hasn’t been controlled by its controller continuously since their most recent turn began. (See rule 302.6.)
If a creature has haste, its controller can activate its activated abilities whose cost includes the tap symbol or the untap symbol even if that creature hasn’t been controlled by that player continuously since their most recent turn began. (See rule 302.6.)
Multiple instances of haste on the same creature are redundant. (CR 702.10).
Whenever you
activateTo activate an activated ability is to put it onto the stack and pay its costs, so that it will eventually resolve and have its effect. Only an object’s controller (or its owner, if it doesn’t have a controller) can activate its activated ability unless the object specifically says otherwise. A player may activate an ability if they have priority. See rule 602, “Activating Activated Abilities.” (CR 701.2) an
exhaustExhaust is a keyword that adds additional rules to the activated ability that follows it. “Exhaust — [Cost]: [Effect]” means “[Cost]: [Effect]. Activate only once.”
An effect may allow you to take an action as long as you haven’t activated an exhaust ability this turn. Such an effect allows that action only if you haven’t begun to activate an exhaust ability this turn. (CR 702.177) ability that isn't a mana ability, copy it. You may choose new targets for the copy.