Vault of the Knights Templar

When Vault of the Knights Templar comes into
play, you may reveal a Human, Druid, Wizard, Soldiet, Cleric, or card with Swarm in your hand.
If you do not, it comes into play tapped.
Pay 1 life, {t}: Add 1 mana of any color to your
mana pool. If this mana is used to cast an artifact spell, that spell has Hexproof.
{t}: Add {1} to your mana pool.