In order to maintain the integrity of the CGC Cards Population Report, CGC Cards' grading team used the verification images taken of every previously-certified Neo Revelation holo to update each card's certification, reflecting their proper variants
Here's a visual reference of the cards he can potentially cast
If the Historic meta is filled with aggressive creature decks and Mono-Red Aggro (which seems possible), then cutting some of the slower one-ofs to make room for Wildgrowth Walker in the main deck is probably the way to go
Basically, you can pull it out and start playing
KTK also gave Sultai a thematic reason to exist, and thats to take advantage of your own graveyard with mechanics like delve and self-mill
With top-end cards like Ulamog, the Ceaseless Hunger, and Emrakul, the Promised End, youll almost always be putting counters on it