Bobblehead Blindbox

When this artifact enters, conjure a Bobblehead that doesn’t share a name with a Bobblehead you control onto the battlefield at random. (The other Bobbleheads are Agility, Charisma, Endurance, Intelligence, Luck, Perception and Strength.) {1}{T}: Conjure a Bobblehead that doesn’t share a name with a Bobblehead you control onto the battlefield at random.