simplify MagicTransmuteActivation by extending MagicCardAbilityActivation
simplify MagicCyclingActivation by extending MagicCardAbilityActivation
simplify MagicReinforceActivation by extending MagicCardAbilityActivation
simplify MagicTypeCyclingActivation by extending MagicCardAbilityActivation
remove unused imports
simplify MagicBloodrushActivation by extending MagicCardAbilityActivation
simplify MagicNinjutsuActivation by extending MagicCardAbilityActivation
aura should drop off if it becomes a creature