What's the event that's fired upon either:
A unit being purchased (like from a tavern)
OR
A player purchasing a unit (again, from a tavern)
I looked and looked but couldn't find anything. If I have to use "A unit enters rect (blah blah blah)", then what would I use to check if the unit came from a tavern? Since I have selectors, i may just check upon the unit entering (since I have a respawn system) if all the selectors are gone. if yes, then it's a respawn and don't do anything. if no, it's a selection and perform the right actions. | 
Unit - A unit Sells a unit