It should like Golden Sun game.
I stands in front of an ice pillar/door, it won't disappear until I opens skills/items and uses a right skill/item to activate it.
And plus, I can config a range for those skills, Ex: Cyclone has 1 tile-range, Move has 2 tile-range in line, Force has 4 tile-range in line, Tremor has 3 tile-range around user.