How to build a bridge with the bones?
#Challange: Imperio
normal frost
dusty bridge
These can be annoyingly tricky. It's best to use Accio or W. Leviosa and position the bones mid-way between the gold plate and the end point.
This usually encourages the game to snap the bones into place.
Some of the puzzles will require multiple sets of bones.
red bolt
I had luck with using wingardium leviosa and levitating the skull+ribcage 'upper' portion right above the skeletal stake bits on either side of the bridge point, then dropping it
old holly
The best way that I found to do that was casting w. Leviosa from the stone platform
unkempt pumice
I always put the skull on the gold plate the game usually do the rest if it didnt work just wiggle it till it does