Heres a version with a light white splash to get Painful Truths that moves away from Hangarback Walker
So when I say this is a trap I am basing this off of the fact that a deck built around Krark will be terrible and worse than Zndrsplt and Okaun decks already are, which is bad and mostly a novelty
The ability to look at the top card of your library at any time is already strong, but Glarb takes it further because it lets you play lands and cast big spellsmana value 4 or greaterright off the top
Building a competitive deck usually means tracking down specific rares, which is why demand is more or less consistent
Black Hole FromTheShire: I don't hate it but sorcery speed, 4 mana, and an unknown number of targets isn't going to get you there frequently
6 defense makes her resilient in play, hopefully allowing for some solid lore generation before any opponents manage to take her off the table