Forum:Fusion Material Replacement?

I remember there being a card that can replace or be used in place of a fusion material monster, I'm asking what the card is, and if there are any like it, I am not asking for substitutions for polymerization I am asking for substitutions for an actual fusion material.

In my case I have Dark Magician and Dark Paladin, I need Buster Blader, and I don't anticipate getting it anytime soon, so I need a card that can take the place of it for a fusion summon.