Either way, its better to be lucky than good, so why not run it
If you gain an amount of life "for each" of something or "equal to the number" of something, that life is gained as one event and Leyline of Hope's second ability applies only once
Creature - Human Warrior Magus of the Balance , , Sacrifice this creature: Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest
Lorcana's first 'set rotation' occurred on September 5, 2025
It popped up again with the Commander Legends: Battle for Baldur's Gate commander decks in 2022, especially with the white-black Party Time deck focusing specifically on the mechanic
You can use it alongside self-mill and reanimation to bring your own creatures back, or when milling the opponent with the likes of Mindcrank and Dreamborn Muse to steal their threats, or just for value