Mox coffer

When Mox Coffer enters create a copy of Chrome Mox, Mox Amber, Mox Diamond, Mox Emerald, Mox Jet, Mox Opal, Mox Pearl, Mox Ruby, Mox Sapphire and Mox Tantalite. You may cast the copies.
Whenever an artifact is tapped for mana, Mox Coffer deals 5 damage to you.