Drawing a piece of equipment when you dont have any creatures on board can sometimes be a bit of a letdown, as while you can get the equipment on the board, it cant really help you out right away
A spell almost no one runs due to the limits of hoping you don't draw an instant or sorcery to interrupt it, along with that steep 10 mana cost
It's just gravy that Greyfax makes us a clue token when we activate her ability
But the success of Collector Boosters suggests that there's a sizable share of the player base thats happy to have a deluge of luxurious collectibles to choose from and buy those that resonate with them
It plays nicely into the AC Universes Beyond set's themes of myth, legend, and history, too, as that massive casting cost gets reduced equal to the total mana value of 'historic' permanents you control (that's artifacts, legendaries, and sagas)
These armored soldiers protect The Golden Throne and the Emperor himself