I think that the card is good, but maybe in the wrong element. Why? Because darkness is the element that use your own weapons against you: steal, voodoo doll, nightmare and even vampire and siphon with the lifes(it uses your lifes against you). But what we are talking here is about a card that bless another creature to then, use another element to use all against the oponent. And that's not the spirit of darkness, in my opinion. And what's more, that card only improve the sinergy between elements that nowadays has it: entropy-darkness has the liquid antimatter one and the decks that relies on discord, werewolf and devourers, gravity-darkness has the connection between black hole and devourers to drain all quanta and nowadays nobody plays quintessence-SoW so i don't think that this will make the combo more famous. But the deck about this card + Fractal + SoSac could be really nice, but once again, i think that the card is in the wrong element and the card keep going in another element. Maybe entropy could be fine because of the sinergy with antimmatter, water could to because you can nullify the bumped creature with freeze or even life to has something interesting to pair with mitosis and then uses SoSac or another shield.