There should be a delay on Kalista's ultimate

so that 1) the support isn't surprised and has time to figure out what they want to do and 2) it isn't an "oh shit my support is about to die" panic button a 1-3 second delay would be good and I mean a delay to the support's state of invulnerability; Kalista casts the spell and a channel begins on both her and the support's screen, and at the end they're taken into the abyss to decide when they want to come out and how It's just not fun when a support can screw up super hard and be saved by a champion clicking R. There's literally 0 counterplay to it. The ultimate should be used solely for stragetic engaging/picks and not as a panic button