You can play this black ramp piece in other color combinations thanks to Urborg, Tomb of Yawgmoth, but those decks make this black land a weak half of a 2-card combo
However, triggering Lathiel reliably is far from easy, and it runs the risk of being a mere 2/2 for four mana most of the time
These are both powerful enough to elevate the decks they fit into best (G/R Aggro and G/W Aggro)
But if it sticks, it quickly dominates
Unlike Crashing Footfalls however, Primeval Titan has been around for many years already, has seen play in multiple other decks in the past (Scapeshift and Titan Breach) and is still kicking strong as a Tier 1 contender despite multiple bans (Summer Bloom, Field of the Dead) in the past
Honorable Mention Poison Dart Frog I had to find a place for the frog