Not only is it a fun meta joke to have a card called "Card Collection" in a TCG, but this card also references the reward you can get in Final Fantasy XIV by collecting enough cards
Even though some of the rooms or whatever may be a bit boring/bad, most of them are really strong, and as mentioned before, they cover a wide range of desirable effects in the game
While you might feel a bit limited with just mono-blue, this commander can churn through your deck or copy important spells once you resolve a couple of prowess triggers
Gaea's Cradle The best MTG land you can actually play An land only needs to produce two mana when you tap it to be, objectively, broken
The hype seems likely to continue carrying this card into the stratosphere.
The only time this is a really good thing to flop out is against red and/or black decks and even there she isn't the auto win that Sphinx of the Steel Wind is against red and/or green