Two triggers.
First one is:
Event - Hero Learns an ability
Condition - Ability equals to [your spell]
Action - Set IntegerVariable = Integer Variable + 1
Second one is:
Event - Hero begins casting an ability
Condition - Ability being cast equal to [your spell]
Action -
If/Then/Else - If IntegerVariable = 1, do [whatever actions you may for level 1 spell.]
If/Then/Else - If IntegerVariable = 2, do [whatever actions you may want for level 2 spell.]
And so on... of course you'd have to alter some things, but those are the basics.
Hope this helps. :) |