I'm confused, I SHOULDN'T use Particle Fusion and three Rubies? Why the hell not? I can amp up ruby to insane ATK strength using these cards, even more so with Master Diamond! And here I thought the only thing holding me back against tougher opponents was a lack of decent staples...
I am leery of using Master Diamond, too. But I've been having a blast with Particle Fusion, one polymerization along with Fusion Time! and Elemental Hero Woodsman.