Shifty Niv-Mizzet Reborn (EDH / Commander)

It's easter for Niv-Mizzet and he brought some of his guild friends to steal your friends and jack their steez.

There are a few strategies and synergies going on - stealing / copying creatures, ETB abuse via flickering, dragons for -X/-X or blockers, and controlling the board until one or more of the synergies can get going. There's also some healthy ramp in there that's as close to multipurpose as I could get. And last but not least, there's a combo with Deadeye Navigator and Peregrine Drake that generates infinite mana of all colors so long as I've got one blue producing land and then at least two other lands that can produce all 5 colors. Once infinite mana is floating, flicker the Navigator and soulbond it with Niv, repeating the process to put into hand every two color spell in the deck. From there, cast everything and infintely trigger their ETBs via the soulbond, gaining infinite life, fighting all the creatures on the board, stealing all creatures, destroying all artifacts and enchantments, drawing my whole deck, milling each opponents' entire deck, and finishing everybody off with Cut // Ribbons or Anathemancer.

It's still a pretty new build so I'll have to see which pieces reliably come together.