[REQUEST] Is this possible? Run commands based on events

I was wondering if it were possible to have an event have a player run a command automatically? Perhaps with OP privileges to bypass players own privileges? This would allow passive compatibility with almost any plugin These are examples of what i think would be nice with this feature:

(if you have Kitplugin installed)
Event: Player Dies
command: /kit Starterkit (the player will always have a wooden sword for example)

(if you have towny)
Event: Player kills other Player
command: /town leave (allow PVP but it kicks players out of the town, better for admins who don't like restrictions, but consequences instead)

Other Ideas:
Event: Player kills 100 pigs
Command /groupset Player Pigslayer (this group could give him the title "the Pigslayer")

Just some ideas I'd like to see

 

Of course that is possible with a plugin.

 

I've yet to see this plugin anywhere, if therei s one out there could I be pointed to it? And I apologize for the post If there is yet a plugin like this available, i can see a lot of possibilities with it