Thats right, Outlaws of Thunder Junction is a Wild West set, which means Wizards of the Coast has been giving away cowboy hats like a hen party
General-use cars such as Raigeki and Pot of Greed, which have good effects that are always usable, are generally considered better than situationally useful cards
However, an Aura spell that doesn't resolveperhaps because its target becomes illegal in responsewon't enter the battlefield, and it won't cause constellation abilities to trigger
But when combined with Ivy Lane Denizen, you get an infinite amount of squirrels and an infinitely large Scurry Oak
For other uses, see Doppelganger (disambiguation)
I really like Hunters Insight out of the bunch