Ellie and Alan, Paleontologists is one of my favorite cards with discover because it has a repeatable effect that can be used multiple times a game and even on the same turn if you manage to untap it and have enough creatures in the graveyard
Theres a true arcane feel to it: magically enhancing your creature in a bevy of ways, be it stats, keywords, or some great effect
While at first glance Bloodghast may appear to be a somewhat simple and mediocre offensive black creature, its Landfall ability is a game-changer
Heck, its probably the fifth-most-played Constructed Magic format already, clocking in after Modern, Standard, Commander, and Legacy
Each of the lands are reversible with each art depicting the land before and after the dinosaurs escape
A battle is a permanent, and you cast it like any other nonland card