New Game Mode Idea

Me and a buddy came up with something. Summoner's Rift Map. Standard Mode, with a twist. So a 'Doombot' was a co-op vs AI mode that was available for a while. The Doombots had more base HP, more base attack power and ability power, gained gold more rapidly, had hyper aggressive AI, and their abilities hit harder and had extra effects. Now imagine a random Voidspawn Doombot spawning at a random time in the match, with a Demon's Soulsesque black phantom appearance, with items equal to what the highest gold farm champion on the field would have. He gives NO EXP, NO GOLD, NO BUFF. Your only option is to kill him, or die. It will take more than one person to kill it however. That's where it should get interesting. The Doombot should have no IFF(Identify Friend/Foe.), so the enemy should be trying to kill it, too. Not ganking you. Because when you die, that Doombot is making a beeline for the douchebag that killed you. All ten champions are prey. It just chooses one at random to start with. If it kills them, it then chooses another random champion if there is not another target within 2500 range. He spawns at complete random times, to avoid being prepared. "Black phantoms" start spawning after 7 minutes, and any jungle camp has a 10% chance to spawn a black phantom when it respawns with a 120 second cooldown after the black phantom has been killed. The idea is to be completely unprepared. They can be intercepted and seen by sight wards. If you happen to notice it, the team should be able to engage and destroy it before it reaches its target and it will fight back. At 7 minutes the jungle camps will gain a 10% chance to spawn a black phantom. They will all spawn in the jungle and at total random after 7 minutes into the game after loading in. The system considers Doombots as champions. So all abilities, including Ultimates are usable. However, Smite can only be used If the jungler has the item that allows the use of smite on champions. Doombot's can draw aggro from creeps as well. You can use them to help. It will rapidly regenerate HP out of combat, so its next engagement will be at full strength. Turrets will attack the Doombot, either teams turret, but will only attack the doombot if a champion is struck in target radius. But the doombot is smart enough NOT to tower dive, don't expect help. If you run under a Tower, or both teams run under their respective turrets, the bot will likely take your Creep waves, overall lowering your Gold income. We'll call it "Predator" mode.(Of course, this can just be added to summoner's rift as is, too.) I feel it would really shake things up, even for pro's. Let me know what you all think.