Maybe changing speed as well, so it could be super high and decently low to be more unpredictable and dangerous.

Downvoting, since you don't even have a suggested monster in your RFE.

There's tons of dangerous foes, so not really understanding your point in this.

The monster is the Chaos Vortex. Presumably it explodes in a corruption blast.

Perhaps it could be very fast (like 175-250) but act erratically so it would never run straight at you, but instead only spend every other turn pursuing you. It should of course be a high DL and give 1-2 corruptions.

Il find some interesting in a very slow monster(30speed~) with low DL drifting and detonating/fade away like vortex,similar to corruption traps,but a bit higher.(x2~) ;\

Make speed scale with DL. About 50 at low levels and up to, say, 300 at high. Like the idea about chaotic movement on high speed. To keep it challenging at high levels corruption could also scale up with DL. Also it could summon corrupting creatures upon exploding (but not fading) at high DLs which could make it even more challenging.

Upvoted.

I'd say it should explode with a random effect - could be fire/acid/ice/lightning. That's what chaos is like, unpredictable, erratic.
Having a corruption vortex explode in your face right after descending and giving you instantly 1-2 corruptions is not fun.
That's a rare case I admit but I'd still feel like it's a bit of a punishment simply for daring to descend.

Ahh, how long we have come from that old bug tracker filled to the brim with spam. Truly Internet is a wonderful thing.

Personally, I like the idea of a corruption stream explotion and psjb1's suggestion about speed-shifting. But that's just my opinion.

I'm also positively surprised this was already discussed by TB and community in general. :)