Yeah, about the es_fire, most es_fire are global server variables. You might be able to go through es_trick and make it player specific, not my area of expertise really.

and yeah, its all poison. To poison, i was poisoned. I will poison you. lets poison him. he has been poisoned, he poisoned himself.

Yuh, it is bugged, but that's why some people try it out and give you bug reports..

Can't expect it to be perfect to begin with, neh? ^^

Well. I'd still like to see it finished and unbugged - here another find of mine
(Of skill 3, Restoration)

you forgot a second at ' (event_var(userid) ' - Fixed thats ^^

A good idea would be - having the ultimate be limited to like, every 45 seconds, sacrifice 30-20 health, and ressurect 1 random team mate.. I would say that would be less buggier - still a really cool skill, and it wouldn't be overpowered!
It would be like the Phoenix skill of the blood mage, but useable more often..
Or even turn it up a notch and add a menu - that lists the dead players, and lets you select one..