Jim's Mana Vault

Mana Vault doesn't untap during your untap
step.
At the beginning of your draw step, you may pay
{4}. If you do, untap Mana Vault.
At the beginning of your draw step, if Mana
Vault is tapped it deals 1 damage to you.
{t}: Add {c}{c}{c}.
I get to draw first, right?
—James LaPage