Oberyn Martell, the Red Viper

{Dockside Extortionist}
When Dockside Extortionist enters the
battlefield, create X Treasure tokens, where
X is the number of artifacts and enchantments
your opponents control. (Treasure tokens are
artifacts with " , Sacrifice this artifact: Add one
mana of any color.")
"It Is Rare To Meet A Lannister Who Shares My
Enthusiasm For Killing Lannisters."