The card is called Activation/Rebirth/Awakening
What it does: It activates a target creature's skill for your use.
This means when you play it on a creature their skill becomes activated. If the skill is a 'targeting skill', like paradox, it will let you use that skill yourself. Especially if it is an enemies creature, but you may use it on your own.
Potential uses:
-You could target your opponents gravity pull creatures.
-Target his Otyugh to eat one of his own
-After using one of your own creatures skills, this card would then allow you to use it a second time!
-Many more...
This card should probably have a medium level casting cost, it won't be a game changing card, but it would be useful in many situations and sounds like a lot of fun.
I tried my hand at creating the card itself, keep in mind this is the first time I have used photoshop
Edit: Also, A possible idea is that it only activates the creature for your use, rather than activating the skill itself. If you do not have the required casting cost for the that skill then the card is wasted.
