Cloak hides the identity of a spell. It is strictly a PvP spell. There is no reason to ever use this spell when questing.
It can be handy to cloak a spell you put on your opponent in PvP. If I cloak an infection and cast it on you, you might think it is a weakness, or some kind of dispel. You might waste your satyr against that cloaked infection, where as if you knew it was infection, you might use a Sprite to get it off, instead of using up your Satyr. You can also cloak things like blades and shields.
It can be particularly effective if you cloak a dispel of your opponents school. Imagine cloaking a fire dispel, then your opponent tries to use a heckhound. BOOM. Up to 14 pips gone, just like that. Or cloaking a myth dispel, then your opponent tries to use his multi bladed Medusa upon you. If he knew he had a myth dispel on him, he would easily get it off with a zero pip myth spell. But being cloaked, he may use his attack and therefore lose those pips.
ALSO, Cloak creates an extra spell in your deck, after you reshuffle. So if you only carried one infection, cloaked it, used it, then reshuffled. You now have a cloaked infection in your deck, PLUS your regular infection, PLUS your Cloak spell, which can now be used to cloak another spell. The same principle applies to Gargantuan.
in pvp your enemy wont see what the shield or charm it enchanted is but instead they see a ? on the shield or charm so basicly they dont know whats in front of them and this can be handy and can be used as a tricky move it only works in pvp though so dont try it outside the arena it basicly cloaks and hides your shield or charm
If you mean the spell you can get from Diego Santiago Ramirez the third (i love saying his full name) then this how that spell works.Say you use cloak on a fire shield well then the enemy doesn't know it is a fire shield they just see a grey shield with a yellow question mark on it. I hope this helped. See ya in the spiral! Chris Hexcaster level 37 balance wizard