This has negative synergy with black-green creatures that give tokens upon dying. Is the bottom-of-library theme even a thing anymore?

Not sure about the bottom-of-the-libary theme. Like the card, but it really doesn't shimmy with all the die-->get token cards, it's actually a pretty good counter to them. Giving a colour its own counter is all kinds of hilarious though^^

We talked about possibly doing some cards that put cards from the graveyard onto the bottom of the library but not at common. I will admit that this doesnt interact well with those cards but currently we only have 2. I see this as more for the archetype though. I think its important we have a card like this at uncommon and I'd already made this. Could be change or this kind of effect could be shifted to another color.

Do we want to keep that theme after all? Especially because it doesn't really go with any of archetypes, since both are more about the graveyard or the hand, not the bottom of the library though. It also hurts all the cycling creatures which could be brought back by all the graveyard returners for creatures and cycling cards. I don't know, I do like strategic cards, but this might always hurt you more than the enemy, which makes it pretty hard to play around.