The MagicCon Chicago preview panel also unveiled multiple cards for the aforementioned Tarkir: Dragonstorm, including the serialized Headliner card for the set in Mox Jasper--the first in Magic's ...

This artifact echoes the powerful Mox artifacts from Magic's history with a zero mana cost and the ability to create one of any color mana - though you need to control a dragon to use the ability.