So it seams riot announced Killjoy abilities (American version) and after a bit, they remove the page (dunno why) but it seems some people got the content and leaked it:
Equip and deploy a bot that hunts down enemies who dare to get in range. When my killer robot friend reaches its target, boom goes the idiot.
Alarmbot not only deals damage, it temporarily leaves affected targets vulnerable to double damage from all sources. Hold equip if you want to recall your deployed bot.
As you can understand from the name, it’s a Turret, the firerate is not that much, but it is good for a bit extra damage and distracting enemies.
Sometimes it’s good to plant some roots. Deploy a turret that fires at enemies within its 180 degree cone. Hold equip to recall the deployed turret.
With my turret, I can hold an area pretty well myself while the others cover the angles I can’t.
OK check this out. Throw the grenade. When it lands, it goes quiet. Then, activate the Nanoswarm to deploy a damaging swarm of nanobots and catch the enemy crying. I love this trick!
You’ll have to adjust your timing for the windup, but once you get this device going, it detains all enemies caught in its radius for about eight seconds. Yeah, enemies can destroy it—except I built plenty more.
Here is a video that will show you the abilities together: