First up, you need two additional cards the classic Ashnods Altar as a sacrifice outlet, and Thermal Flux which can turn a permanent into a Snow permanent
Sultai has seen its fair share of graveyard synergies, so there are lots of pieces to choose from when building Henry Wu, InGen GeneticistHenry Wu, InGen Geneticist, though Henry would be suited better as a commander than a piece in the 99
Sacrifice after III.) I - Return each creature that isn't a Kraken, Leviathan, Merfolk, Octopus, or Serpent to its owner's hand
This will likely be part of the preview panel later today, but it could get its own smaller announcement elsewhere instead
Anyone who follows me on Twitter will not be shocked by this pick
The Commander: Caesar, Legions Emperor Caesar, Legion's Emperor is a 4-mana Mardu commander with a fairly simple gameplan: Grow your army until you can take out the competition