This approach reduces mana strain while maintaining access to key effects
On top of that, Oblation can be pretty flexible early on if you are struggling to hit your land drops
You've got a bunch of tutors to find The Meathook Massacre and Cacophony Unleashed if you can't escape them with Master of Keys, and you've also got several other options in Doomwake Giant, Supreme Verdict, and Extinguish All Hope
Dual lands are expensive due to high demand, limited supply, and power level
Its very nasty-looking mouth actually reminds me of the Fungusaur from Alpha, so perhaps this is a related species
The gameplay is consistent from Once Upon a Time and Oath of Nissa, but one of those is gone and the other is likely to join as well