Omnath could make great use of Azusa, but I think there are two reasons why she's not more popular for him: first, he's perfectly fine on a budget, and since Azusa has long been a pricey card, it was a low priority for players with an already functional deck
Graded Population Report: Meganium #11 Visualize the distrbution of grades in the chart
Definitely a powerful ability, and one thats worth supporting with cards that grant or emulate haste like Lightning Greaves, Thousand-Year Elixir, or Swiftfoot Boots
You head into Cradle of the Death God (dont forget your venture marker!) and its ability triggers, creating a beautiful The Atropal for you to cherish and destroy your opponent with
This is a wonderful deterrence and response to whatever your opponent has up their sleeves
Abzan also has a little bit of a self-mill and recursion identity, but it feels like a worse version of Sultai in this regard