Like most Magic: The Gathering cards, the value of Foil depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (The List)
Vat of Rebirth One of the best black artifacts in Magic, Vat of Rebirth is great for any deck that wants a lot of its creatures to die, and then reanimate the best of the bunch
The Hildebrandts were very influential for me growing up
The game itself is a refreshed version of Pokemon TCG and includes regular content updates, new card sets, and an iPhone app
I've seen some people testing it in energy shells during early access but hasn't really wowed so far
The borderless Gauntless version of The Soul Stone, meanwhile, is worth $880