I would like some opinions on these skills in regards to balance, ease of use, and usefulness.
I only have 3 now, but may make more later. All the icon art is stuff I made just for these skills. This is my first attempt at making skill suggestions, so constructive criticism instead of flaming is preferred

Unbreakable Bond
Profession: Monk
Attribute: Divine Favor
Elite Stance: For 3...9 seconds, enchantments you cast can not be removed. Cost: 5 energy. Recharge: 15 seconds.
Divine Favor: 0-1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20
....Duration : 3-4-4-5-5-6-6-7-7-8- 8- 9- 9- 10- 10-11-11-12-12-13-13
Mechanics:
- One you use this skill it can only be removed by canceling the stance or having the stance removed by an enemy. As soon as the stance ends, any enchantment you will or have cast, can then be removed. Once you reapply the stance, even previous enchantments you've cast are unbreakable.
- This skill is unaffected by other skills that lengthen stance duration. Skills such as Dwarven Stability will fail to take effect.
Notes:
- As it's not a spell, it can not be used in conjunction with Arcane Echo.
- Mirrored Stance can be used on you while under the effects of this skill. The duration for you and the hexer will be equal to your divine favor attribute.
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Vaccine
Profession: Monk
Attribute: Protection Prayers
Enchantment Spell: Remove 1 condition from target touched ally. For 3...15 seconds ally can not be affected by the condition that was removed. Cost: 5 energy. Casting Time: 1/2 second. Recharge: 25 seconds.
Protection Prayers: 0-1-2-3-4-5-6- 7- 8- 9- 10-11-12-13-14-15-16-17-18-19-20
.....Spell Duration : 3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-20-21-22-23-24
Mechanics:
- The skill will not stack when used with Arcane Echo. If suffering from 2 conditions, after the first one is removed by Vaccine, the echo'd copy will remove the 2nd condition and make the ally immune to that condition instead.
Notes:
- Great skill for casters to use to remove daze, due to short cast time and temporary immunity. However, it's best to not use this as a primary condition remover due to cover conditions that may make this skill much less effective.
- May replace Mending Touch on some melee skill bars as a good answer to blind, weakness, cripple, and other conditions that would be beneficial to be immune to for a skill chain or two.
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Hammerhead Arrow
Profession: Ranger
Attribute: Marksmanship
Elite Bow Attack: Shoot a slow-moving arrow that deals +10…34 damage. If this attack hits, target foe is knocked down. This attack can’t be blocked. Cost: 10 energy. Activation Time: 1.5 seconds. Recharge: 10 seconds.
Marksmanship: 0 – 1 – 2- 3- 4 – 5 – 6– 7- 8 - 9- 10-11-12-13-14-15-16-17-18-19
Spell Duration : 10-12-14-16-18-20-22-24-26-28-30-32-34-36-38-40-42-44-46-48
Mechanics: Pretty self explanatory.