A Ravager next to a bunch of other artifact creatures is a threat that is hard to navigate, as opposed to a couple of large creatures
Specifically: Enduring Courage Enduring Curiosity Enduring Tenacity Enduring Innocence Enduring Vitality Overlord of the Balemurk Overlord of the Boilerbilges Overlord of the Floodpits Overlord of the Hauntwoods Overlord of the Mistmoors The Japanese Showcase versions also come in non-fracture foil editions, which are quite a bit cheaper, but these Japanese Showcase versions are only available in foil, either fracture or regular
Admittedly, that's not super helpful in Jund colors, where you don't have access to Thassa's Oracle
Curse of Deaths Hold might actually be better, as it also helps against U/W/X Control
According to TCGplayer market prices, the most valuable of the Surge Foil Box Toppers is the Cavern of Souls, coming in at $400 or more apiece