Dungeon Delve

Exile the top card of your opponent's library. If
it is an instant or sorcery you may play that card
without paying its mana cost. If you don't, create
two colorless Treasure artifact tokens with "{t}: Add one mana of any color."
"Inside is the great ruby medallion of Oramoz, its
power is said to unlock the vaults of Arkhosia! And
all I got was a couple of gold pieces!" - Farris, the
Quick-Blooded