Just hide them....
Have 2 spells. lets say Water and Fire.
If Hero uses Water, then CD starts, u hide this ability and
the Fire abilit apears, Now he uses the Fire and Fire gets CD.
It switches back , but the unit has to wait because the water ability still
is in cd.
There is a Function to do this:
-
Player - Deactivate "SKILL" for player 1