Kog'Maw: Now you're eating with explosions

Kog'Maw has a lot of weaknesses.

No, seriously, a lot of weaknesses.

He's weak early game. He's weak to dives. He's weak to disengage. He's weak to flat damage reduction. He's weak to flat damage return. He's weak to CC. He's weak to short trades. He's weak to long team fights. He's weak to attack speed slows. He's got the weakest mobility in the game, which makes him weak against skillshots. Four of his five abilities are skillshot-based, so he's doubly weak to mobile opponents.

At the moment, his Passive is (sort of) covering one of his weaknesses. His weakness to dives. If you dive Kog, he's probably going to explode on you. It's a fairly strong (and hilarious) Passive. So instead of going the usual route and suggesting the replacement of Kog's Passive with a new Passive that augments his strengths, what about changing it up a bit to help cover a few of his weaknesses? What if he could share his Passive with his foes?

Icathian Surprise: Kog'Maw's skills and basic attacks attach Void Spores to enemy units for four seconds. Void Spores stack, refreshing the duration. After four seconds, the Void Spores catalyze, dissolving the victim for (amount) True Damage per Void Spore. If an enemy Champion is killed before the Void Spores catalyze, Kog'Maw is healed for (amount) per Void Spore and the cooldown on Bio-Arcane Barrage is refreshed.

Upon taking fatal damage, Kog'Maw remains active for 3 seconds, losing the ability to use abilities and basic attacks but becoming untargetable and invulnerable and gaining bonus movement speed over the duration, increasing to up to to 40% bonus movement speed. At the end of the duration he bursts, inflicting all enemy units hit with (number) Void Spores.

So what does this do?

Well, for one, it adds absolutely no additional damage to Kog's already impressive raw DPS. It does, however, patch several of Kog's weaknesses. Tagging a foe several times in a quick trade would hurt more. Enemies who use mobility spells to launch themselves out of Kog's range when he uses Bio-Arcane Barrage would take a little extra damage. The heal and Bio-Arcane refresh on decisive takedowns would allow Kog to bounce back from failed dives and continue to sustain his damage through protracted battles.

He would still be weak to dives. And early game. And damage return and damage reduction and mobile champions making him sad and heavy burst and assassins and large AoE effects and basically everything else. But! Now he would have an answer to some of those things!

And best of all? Those Spores are digesting stuff for Koggy! He would finally get to eat something! Considering it's been over five years since Kog was released and he still hasn't gotten the chance to eat anything, I figure it's high time Kog gets a snack.