They require you to go five turns without taking damage (or proliferate their filibuster counters), but there are many ways in blue and white that can keep you clear from danger, like Magus of the Moat, fogs, and Ghostly Prison effects
One thing that the Cavalry has over Craterhoof, at least in a vacuum of single color identity, is that White does get a smattering of blink and flicker effects, making this card far less survivable in the long term if it can be used again and again
R Rare Subterror Behemoth Dragossuary X EARTH Level 6 [ ZombieFlipEffect ] ATK 2400 DEF 1600 FLIP: You can activate this effect
Many players, me included, are happy to see this guy out of the competitive scene
On the surface, the box looks okay, but not sure about the blurry country codes on the bottom of the box
"It could be used as a slingshot," the astrophysicist says of their gravity, though you'd have to be very careful not to get too close