Here you will find a foil or non-foil rare or mythic rare with special art as you can find in collector boosters and a foil rulebook common or uncommon
If you are in the energy deck, however, then this is just a threat that has to be removed, preferably on the stack, before you make 10 beefy Robots that will define combat for the rest of the probably very short game
The demand is usually low for random crimps, but once it hits a card people collect, like a Lightning Bolt or something, the very meager supply of any given card will kick into play full force
Plus, its guaranteed that you can resolve instant spells after casting Veil of Summer on an opponents turn for more interaction
Im also starting to see some movement for Herald of Leshrac, one of the most fun Coldsnap cards in a lands-matter strategy
Archmages Charm None of [c]Archmages Charm[/c]s abilities are super powerful on their own, but the ability to choose between any one of them gives it such versatility that youll almost always be happy to have it in your hand