Thinking on this and comparing it the every other classes armour buff's it's a bit underwhelming.
Dk's It gives the armour, very small amount of dmg returned (basically useless)
Then a very very small dot if someone is close to you when you cast it (useless)
Or a very small damage shield (also useless)
It increases healing by 12% while a draconic ability is activated, inhale, wings, dragon blood and talons also do this, so it's basically up 100% of the time anyway, so really spiked armour doesn't really keep this up.
Now onto other classes armour buffs...
Nb's, they get it from using there most spammed skills, fear, shade, cloak, Sa or concealed, it's up nearly 100% of the time and they don't even need to slot it. Basically free 5.2 armour without doing anything, i'd like this please.
Sorc, gives the armour buff, gives them an aoe dots that follows them and does decent dmg, a lot more than the spiked armour dot that you need to be next too, basically makes them anti nb.
It also proc's implosion/disintegration. One morph gives you minor expedition for it's duration and the other gives major expedition for 6s.
Templar, Gives the basic armour for 12 seconds and 8 seconds more after leaving it, enemies standing in the rune are snared for 30%, rune provides major mending.
One morph gives 240 magicka regen per second, equivalent to 480 magicka recovery in pvp.
Another gives 8% dmg reduction and 8% extra healing.
So spiked armour needs something special... nb's don't need to use a skill, sorc get aoe dots, mobility as well as a auto execute proc chance, templars get armour, magicka regen or dmg reduction and healing boost, major mending, snares. Spiked armour gives armour and basically useless secondary effects.
PS4 EU DC
Current CP : 756+
I have every character level 50, both a magicka and stamina version.RIP my effort to get 5x v16 characters...