[@KatherinWinter]
hm.. what to do what to do lol, I have two ideas for a character since you specifically state Lucifer question is what to do lol. I have basically idea to either take the power of Daemonic Summoning (the most obvious power that no one touched) or to make the shard what remains of Lucifer's Light side (sense Lucifer was a Fallen Angel) granting holy related abilities.