When it's defeated, exile it, then cast it transformed.) When Invasion of Ikoria enters the battlefield, search your library and/or graveyard for a non-Human creature with mana value X or less and put it onto the battlefield
Then you can run stuff like proliferate, the +1/+1 countered stuff getting deathtouch with Mer-Ek Nightblade, and loads more
Six colors of Starter Decks featuring Leaders Red Newgate, Green Uta, Blue Doflamingo, Black Smoker, and Yellow Katakuri which are from previous series
For five mana he's able to exile himself, pulling every single 'Party Guest' card from your deck and putting them all onto the battlefield
Another type of mulligan is called Gabriel Special Surprise Mulligan, or GSS Mull
That would've been very cool to do, but I think since it was from a contest that is why they did not reprint it