the scepter : a new support item

The scepter would be a new tool/weapon craftable like this :

This item would have two uses : the right click would make the player cast a spell that would give him resistance 1 for 30 sec for the cost of one level with 5 sec of charge. If the user is near an ally  and face him, the ally will get the effect but will loose half a level that will be given to the user.

The left click would make the player "throw" a straight line of particles (10 blocks length) that give slowness 1 for 15 sec to any entitie who's in the area of effect for the cost of a third of a level.

how the item would benefit the game?

-the item would allow to get a resistance effect without the downgrade of having slowness and having to farm turtle shells.

-the item would allow for more support play and less offensive roles in a fight

-the item would give more use to xp levels and iron nuggets

and that all, it's my first suggestion here so please give me returns about what i've done wrong or should've done.