How does this card work? I activate it, it takes half of my life points and goes into the graveyard, then I try to activate a polymerization card from my hand but it won't let me. I just threw away half of my life points for nothing!
It does what it says it does. It lets you use materials from your hand, field and GY when you go to Fusion Summon a Machine. It's not going to magically just let you plop a Cyber End Dragon onto the field for nothing.