Healer request : New skills

So, I really like playing healer in the feast but sometime when it's time to go for a kill, I wish I could do more, yes I can throw a few rocks are shiny stars but the impact is still quite limited.

Some of our coolest spells are unavailable and I wish we could have them. However I lack the experience to tell wether or not these would be OP or not.

So here are my suggestions

WHM - Holy
Deals unaspected damage to all nearby enemies with a potency of 2,000.
Additional Effect: All enemies hit are stun for 2s
Recast : 60s

AST - Gravity
Deals unaspected damage to all enemies nearby your target with a potency of 2,200.
Additional Effect: All enemies hit are heavy 5s.
Recast : 60s

SCH - ShadowFlare
Envelops a designated area in a veil of magicked shadows, dealing 500 damage to any ennemy who enter and 250 every sec while inside.
Duration: 15s
Additional Effect: Heavy 25% while inside last2s.
Recast 45s