Commanders like Y'shtola, Kefka, Tifa, and more have unique abilities or powerful combos to build around
It was already played in Legacy and even Vintage decks, which kept the card's price high while Splinter Twin, for instance, crashed post-ban
4 Scavenging Ooze Ooze That Just Keeps Growing 2 Mana Cost in Green Creature Scavenging Ooze is an infuriating creature to fight, going from a simple 2/2 upon its entrance to suddenly being a massive threat as long as its controller has mana and anyone in the game has a graveyard full of creatures
Example: I would not want discard out of Lantern Control against Jund
Taps for a blue or a white
*** As Im sure you can tell, Innistrad: Midnight Hunt has reignited my excitement with Commander and inspired me to build a number of fun new decks