[guineapig]

Oh that's some good stuff right there.

I was toying around with a class idea where the player can do certain special abilities based on detrimental effects cast on it.

Example:

Player is poisoned: Player can now lob some sort of poison spell back at the mob.
Player gets hit with a fire dot: Player can now throw fireballs.
Player is diseased: Player can now use a disease debuff.
And something similar for ice and magic based stuff.

It's an incomplete thought and I'm not even sure what I would call it. But it would be a completely unique ability never seen before that wouldn't require any special mechanics to be added.

The server would simply check how many counters of poison, disease, etc the character has and base the ability he can use on that.

Of course you would have to create an exploit check (ie: purposefully getting high level spells cast on you in a duel), but whatever.