It's a cheaper Pestilence that can only send out activations for Snow-Covered Swamps, but in a Snow deck with the Swamps in question
In its third outing, its turned into The Gitrog, Ravenous Ride, a five-mana black and green 6/5 with Trample, Haste and Saddle 1, which means a creature with at least one power can ride it
Graded Population Report: Ancient Tomb [Reverse Holo] #87 Visualize the distrbution of grades in the chart
Teferi's Protection Teferi's Protection in Commander is like the white Cyclonic Rift
This deck gives up creatures for artifacts that function as elementals, which means targeted removal can risk you overcommitting to elementals, only to be left trashless at just the wrong moment (yes, having no trash is a bad thing)
Instants Disturbed Slumber / Elemental Uprising / Vengeant Earth These three instants are about the same