Alternate Katarina Ult concept.

Instead of the AoE Death Lotus ability everyone loves. Let me give you an alternate ultimate everyone who plays Katarina will hate.

Katarina R: Death Lotus 90/60/45 second cooldown.

Katarina binks a massive distance through a champion. ( Point and click like Fizz Q, 775 units to and through. ) For 1.5 seconds, the target will see decoy Shunpo and Voracity but cannot see Katarina and Katarina cannot attack the target. After 1.5 seconds, the target takes 175 / 250 / 325 ( + 140% Total AD ) ( + 95% AP ) magic damage. If the target dies to this damage, this damage is increased by 115 / 145 / 175% and deals damage in a 550 AoE circle.

This will always kill the target regardless of healing or shielding afterwards. The AoE damage will not be stopped by revival.

Edit: Ult concept, as in if there were a different ult for her. And idea. Not a proposition to replace her current ult. Also, it's kinda like a "You're already dead" ability.