Its not even an Enchant World (or World Enchantment, as I guess they are technically labeled these days), removing that possible axis of interaction
If Lurrus is on the field, you may never see the end of Kroxa
You're probably losing money from the percentage eBay collects
While there are better typal spells than Vanquisher's Banner or Herald's Horn, or better ramping effects than Burnished Hart, those better spells tend to be tied to a color identity and can only be played with commanders that match that identity
Does it have any interesting buildarounds
There's an obvious reason why these cards have increased in value - Edge of Eternities has a new Sliver card, an artifact named Thrumming Hivepool that spits out Sliver tokens (and reimagines them as xenomorph-like creatures, a brilliantly subtle homage)