This leads me to believe that Amethyst is the best Ink color in the game simply because its the only one that offers numerous ways to draw cards and cycle through your deck
Each one has a powerful ability that you can unlock with enough charge counters
Drawing three cards as an instant for a single blue mana is so ridiculous that nothing even remotely close to this card has been attempted again in Magic
Multicolour, Artifact, Land, White and Blue Cards Cards that Only Create Blood Tokens White only has one card that can create a Blood Token with Sigardas Imprisonment
There will be times where it is big for sure, but a two drop that you probably cant play on turn two isnt exactly ideal, and the upside is still just a large vanilla creature
Thankfully, other printings make it clear that its a Legendary Enchantment that exiles opponents creatures and brings them back under your control, with additional counters on them