Commander is no exception
While there's no doubt that Shinji Kanda's artistry is the main reason for this card's sky-high value, you won't find a better depiction of Oricorio in the Pokemon TCG
Wizards of Thay reduces the cost of your instants and sorceries, and myriad allows you to get even bigger discounts because it also allows you to cast your sorcery spells as though they had flash, which is huge for spell slinging decks of all types
I've never been able to bring myself to run it, it seems too annoying, but the 3 toughness might make it less oppressive than your usual 4-5 toughness walls
In a similar way to stripping lands and hands, a massive resource imbalance that leads to locking up a game can leave the other players feeling similarly deflated
With Yorion, Sky Nomad or even Teleportation Circle, Ooze becomes a must-answer threat lest it devour away the opponents entire board