You will not evade me, $name

[Desert]

I played a druid pretty heavily in velious.

Rooted mobs definitely do summon. Cobalt Drakes do not summon but their nukes hurt, and they have nasty PBAE's that will piss off other people in zone if you're not careful, I remember farming the shit out of them for their tradeskill drop (whatever it was escapes me now). I'm pretty sure those giant worms in WW Summoned, but the wolves and non-named dragon crap didn't.