Not really. If Nihilego gets knocked out next turn, then you wasted the GX attackCan't forget about Nihilego-GX, the GX attack is busted!
Empty light is going to leave your opponents active confused and poisoned, so you can lay it down, power it up with two Malmar and an regular energy attachment, retreat your active and then do your GX attack. Then you survive if the coin flip goes your way on the confusion. It may not be the best Malmar partner, but it's another good possibility.Not really. If Nihilego gets knocked out next turn, then you wasted the GX attack