Lands As Blue Control, you'll want to consistently hit your land drops each turn so you'll eventually be able to cast multiple things each turn
This set introduced decently competitive Leaders, with Doflamingo, Queen, and Rebecca all seeing some play in late 2023 events
I do want to address that she absolutely does run some Lhurgoyfs as a way to get incidental value throughout the game
You could just go ahead and play EDH as planned but with five players instead of four
Obeka, Splitter of Seconds is a four-mana 2/5 with menace in Grixis, and her second ability has caught the attention of Commander brewers whove been looking a new itch to scratch: Whenever Obeka, Splitter of Seconds deals combat damage to a player, you get that many additional upkeep steps after this phase. Additional upkeeps
As far as card value goes, thats always dependent on the set