Guild Wars 2

The reflect and block effects of mimic are awesome.. unfortunately it only starts blocking and reflecting AFTER the first projectile … a simple and efficient change to this skill is to have it start reflecting and blocking as soon as you start channeling…

which would mean a 4s reflect and block with the ability to copy the first projectile that’s reflected.

very useful for survivability especially in wvw.

Alternatively, have it be the good ol’ copy-a-skill from GW1 again:

Arcane Mimicry
Elite, 120s CD
Copy your opponents equipped Elite ability. Some abilities cannot be copied, you will copy another of their Elites in that case, chosen randomly.
Arcane Mimicry’s cooldown is increase by 50% of the copied ability’s cooldown, and if you do not use it in 30 seconds the ability is lost.
Note: Can copy racial Elites, as applicable.

Mimicry
Utility, kitten CD
Copy the utility ability the target enemy has equipped in the same ability slot as Mimicry. Some abilities cannot be copied, in which case you will copy another equipped skill if possible.
Mimicry will have either a 45 seconds CD or the CD of the copied ability, whichever is longer.

Arcane Echo
Elite, 120s CD
Arcane Echo becomes the next utility or healing skill you use within 10 seconds. Copied skill resets upon use or when Arcane Echo’s cooldown expires.