Vertical

If a forced movement effect has the word "vertical" in front of it, then the forced movement can move a target up or down in addition to horizontally. For example, if a forced movement effect says "vertical push 5," then a creature targeted by the effect can be pushed up to 5 squares in any direction, as long as the forced movement is a straight line.

If a creature who can't fly is left in midair at the end of a vertical forced move, they fall. Forced movement made against a creature who is flying is always a vertical forced move, whether or not the effect specifies it.

Though you can't freely push, pull, or slide a target up and down unless that forced movement specifies "vertical," you can move them along a physical slope such as a hill or staircase. For a target to be force moved along a slope, each square of the slope can be no more than 1 square higher or lower than the previous square.