And Thassas Oracle is more of a card than any of the similar options
Its role now will be lots of little bonus mana advantages adding up over many turns, as opposed to the old days where it was used to cast Primeval Titan on turn three or some other unholy thing
There are many ways this could be looped, and it just does it's thing, cycling through your deck
Then you can lean into making Jolene a threat that can kill players with commander damage, or just play big, splashy finishers to bludgeon your opponents into submission
Teamwide vigilance in green is hard to come by, and so Gnarled Grovestrider seems playable just for that, even disregarding the bonus counters
The powerful elemental rewards you for playing a good spread of permanent types and works well with self-mill (turning your graveyard into you hand), self-sacrifice, or simply as a Sultai value commander