I chose Thermal Lance, and Random Generator gave me Cruel Revival. It would have been hard to move the revival out of black, so I made this one first.

My first instinct was to turn this into a commando-style card with return a creature from your graveyard to your hand as the end goal. But that kind of bored me... It's been done too many times for it to be an exciting rare. Plus, Thermal Lance set a standard for upgrading the creature when a condition is met, so I wanted to go with something more like that. Plus, plus, What the heck is Zombie Equipment anyway? Why would zombies be raising the dead? It seemed like zombies would like it when other creatures joined them from the graveyard, so I gave them that instead.

Nice trigger! You don't need the "for each card returned in this way" clause - the phrasing of the trigger condition means it'll work that way anyway.

That's what I thought, but I figured I'd be clear. Reverting to normal formatting, though.