Untitled Trigger 001
Events
Unit - A unit Uses an item
Conditions
(Item-type of (Item being manipulated)) Equal to <Your Item Here>
Actions
Hero - Instantly revive (Random unit from (Units owned by (Random player from (All allies of (Owner of (Triggering unit)))))) at <Location Here>, Show revival graphics
That should do the random revival job. Haven't tested yet.
Right, scratch that. It looks like it should work, but it doesn't.