This spell creates a disc that floats in the air behind you.
You can put things in it so that it carries them for you.
Maximum duration for this spell is LVL/2 minutes,
but in any case it will last at least 2 minutes.
You can also update the floating time by casting the spell
at certain disc. Floating discs are known to be unstable.
You can refer a floating disc with "<owner>'s disc", or
"my disc", which works for the owner.
If mud crashes, you lose the items on the disc.  POOF.
Note:  You can 'dissipate' or 'dispel' your floating disc
if you wish to end the spell prematurely.