not rolled by the roulette
Arcane Cloak is a guard skill that consumes a large amount of mana to apply a buff that absorbs incoming damage for a short period of time. The buff absorbs more damage and grants added lightning damage the more mana was spent.
It's like it was made for the Indigon unique.
Level requirement: 16.
The roulette doesn’t roll this gem, so its delivery options haven’t been worked out.