While both builds need Steam Vents to really be optimal (which is a pretty significant cost), apart from the mana base, which pathway you choose is mostly up to you
The Avatar: The Last Airbender set debuted the firebending mechanic, which ramps your mana, as long as you can cast stuff during combat
However, if we have a rested Character on the field, they'll likely deviate their focus to that Character and try to KO it
In addition to top ranking players from the Pokmon Championships 2023-24 Philippines competition, Worlds invites will also be awarded to the top ranking player(s) in the season's Championship Points leaderboard
That being said, Lumra gets the added bonus of being a legend that players can build around in EDH, which is a big deal
Crucible of Worlds is a must-have for any land-based MTG deck, particularly those that rely on land reanimation like The Gitrog Monster