[@King Cosmos]
Rather than an actual wall or barrier, the aura that appears around the target is meant to be an indicator that the spell is active on them. What Shield actually does is a buff on the target—it essentially raises your Defense. So right now it wouldn’t allow all those creative uses—remember we’re still basically at level one. For higher ranks of the spell, or other spells you learn later on, barrier traps, platforms, etc may be possible. I like your thinking though!

[@Guy0fV4lor]
Calm down there, Zaheer. XD