Kalista: ammo counter on her passive
Right now there is no reason not to hop after every single auto attack. By adding an ammo counter (generates 1 ammo every 7/6/5 seconds, max 5) you encourage Kalista to save her hops for when it matters and not just hop all the time. She can still do her thing in trades and small scale fights, but she can't chase or kite endlessly. You could even get fancy and give her some ammo back when she kills a target with Rend, etc.
Is there any reason why this should not be done?