Riddle goes Biblical
SPNs Lucifer decides to let HPs Voldemort have a shot at him, just as he did Kali and the other Pagens. But he has to show he's even worth it:
Vs The Wicked Witch
Merely a warm-up match, standard wand only. Win, lose, inconclusive, leave from boredom.. either way he passes to the next challenge.
Vs Crowley
A teaser for things to come. And hey, what's a party without Crowley? Here Voldemort can choose whether he gets the Elder Wand or not. Though if he does, Crowley is allowed the Angel Killing bullets w/Gun. Again, either way he goes on through to the next round.
Vs Lucifer
With interests perked, he gives his condescending praise and steps forth. Elder Wand and Archangel Blade permitted, and now the EW doesn't have the drawback of breaking down with extensive/high levelled usage. Battle to the death.
Bonus: Voldemort and his assembled troops Vs Lucifer
Upon death from the last round, Lucy will resurrect Tom out of good sportsmanship. This time around Voldemort gets to call upon anyone in his own verse as backup.