(Hey, theres another card for Spike!) Over-the-top cards like this are the reason few new equipment cards ever dominate their formatsWizards has found a clear example of too good. This is a card that can dominate just about any format you stick it in, and new players often underestimate its power
Journey to Nowhere also slows down Delver and Maverick decks
The odd silver lining is that these cards just make the main set cards look even better
Deus of Calamity primary damage source, and fits the land destruct theme
The problem is a playset of Gemstone Caverns is currently around $200, tripling the deck's price, but if you are trying to eke out every advantage in a tournament, it's probably worth the price, even though you'll only use it in something like 30% of your games
Furthermore, first strike and double strike do not stack