Lost remover is an amazing card. Its disruption potential is astounding. Not only is it good at taking out DCEs, but can also take out special darkness/metal energy in a way even steelix can't recover. But most importantly in my eyes, it gets rid of rescue energy. This saved my butt multiple times at battle roads. Should it go in every deck? No. Are there some games when you can't use it? Yes, as with any tech. Are there decks it should go in? Yes, any deck with a disruption leaning should run it. Its worth the 1-2 deck spots to see your opponent cringe when you cripple their tank.