The idea
The barrier spell is a low damaging move (lower than beam) that can be unlocked at level 95, and creates a wall of your magic, blocking attacks from things like arrows and other attacks, the type of magic the barrier is made from changes how strong the barrier is, but all barriers deshawn after 50 seconds if they are still standing.
Clashing can also effect how much damage barriers take,for example if a fire wall was struck with a water blast, it would take significantly more damage as opposed to a snow.
The way the barrier is placed is like an explosion spelling terms of activation, However there is a few different variations that can be made.
The barrier spell similar to an explosion spell, can be placed or self, self barriers are stronger, and placed barriers have better range.
There are two shapes of barriers that can be made:
(Note that all of these spells can have their sizes adjusted, changing the magic energy they consume)
Dome
Appears as a large dome of whatever magic you chose, can be used to trap players or protect yourself, however to balance these spheres don’t last very long, only 6 seconds, and they are the weakest form in terms of durability.
Wall
Strong barrier that can take a lot of hits, lasting 10 seconds before natural despawn or destruction by another magic. however summoning it leaves you open for a bit.
Other notes
The type of magic that makes a barrier changes how strong it is.
Gas magics: weakest barriers
Powder magics: slightly stronger than gas
Energy magic: depends, fire and light barriers are awful while explosion and lightning barriers are stronger.
Liquid magic: decent strength
Solid magic: excluding glass, have the best barrier strength in the game, metal being the top magic.
Reason to add/change
Opens new ways of magic based combat, also sounds cool.