The glossary entry for Phasing is rather sparse, and doesn't seem to address any specific issues that could arise while phasing. Phasing: While a creature is phasing, it ignores difficult terrain, ...
Does a large creature need to squeeze to fit into at 5' tall passageway?
What counts as ground for this ritual, if you have a 5x5 piece of stone/paper/metal/wood under the disk, and that is moved up, say 10 feet, would the disk phase through that stone, or hover 1 foot ...
Is there a high limit on how high the disk will fly? If i'm on it and use a move action to go "UP" how far will it go before it refuses to go any farther? I did not see any mention of high limits ...
How much vertical space do a rider and mount occupy together?
Are there rules concerning the interaction between a creature and elevated obstacles? Example: Say, you have the following. Tall Goliath (7'8") Short Gnome (3'4") Short Kenku (5'0") Short Human ...
If I cast blade barrier, does it have to be anchored to the ground? Or can I have it float anywhere I want that it could occupy, such as cast it above me as a sort of roof of blades?