destroying illaois tentacles can be assisting the enemy
this is just a small example why it is so hard to ban trolls inters etc.
in aram, or while sieged under towers if illaois e turns your teammates into a vessel, all they have to do is dodge the smack of the first tentacle and then go afk. as a new tentacle cant spawn as long as one is alrdy spawned in the "available tentacle slots". destroying the tentacle AFTER s1 on your team told you the above is technically assisting the enemy illaoi as more testicles (yup) will spawn and there is greater chance your team takes free dmg.