This cards true strength comes from its versatility
Yes, it will benefit your other opponents similarly to the C17 curse cycle (Curse of Opulence, Curse of Disturbance, etc.), but it will also incentivize those opponents to send more Creatures towards the cursed player to benefit from the free card advantage (and additional damage thanks to Trample)
A practical revision might look like this: Version 1.1 Removed: One expensive counterspell Two slow value cards One colorless land One redundant combo piece Added: Two flexible interaction spells One additional colored source One card-selection spell One alternate win enabler Play another set of games before making additional changes
This was one of the original alternate wincons that felt doable in most Magic formats, though its benefitted from an influx of extra gate cards in various MTG sets, which means you dont have to be a 5-color deck to pull off a Mazes End victory anymore
Any creature that cares about the number of creatures you control needs to have a way to make more on its own, and Adeline does that in spades by creating a 1/1 for each opponent you have
All these cards and more make up the Legendary Creature suite that you get to pick from when brewing a new Commander deck