Cancel is a useful command which allows several exploits.
- bring out a unit, heal them with someone already out, cancel their entrance to keep them safe
- bring out a student whose mentor is adjacent to BP, have mentor cast spell they do not know, cancel student back into BP to keep them safe.
Lift:
- get an enemy blocking a path out of the way, ally units can now move through friendly square, cancel lift
Move:
- move a student next to a mentor, have mentor cast spell, cancel move
- move allies out if the way of damaging area effect spells, hurt enemies, cancel moves to bring them close again
- move allies into group to be healed, cancel moves to keep them apart and safe from area effect