Surveil as many creatures to the graveyard as possible
Then we cast Gyrus, attacking with him plus free copies of creatures in our graveyard, like Sepulchral Primordial to reanimate opposing creatures, Bane of Progress to wipe the board of artifacts and enchantments, or if you're feeling particularly cruel then reanimate a token of Rakdos the Defiler, which enters the battlefield already attacking so you skip the attack trigger that would've forced you to sacrifice permanents and go straight to that juicy combat trigger, which forces the opponent to sacrifice half the permanents they control, absolutely devastating
These two scene boxes depict the Black Sun Invasion and Tea Time at the Jasmine Dragon
Finally a Narset card thats not just straight-up broken
To get the mayhem started, you're going to need a way to discard cards
Wizards seems to use the same files for the backs since Alpha, with clearly separated colors