The Current Support

You may pay {w}{u}{b}{r}{g} instead of this spell's
mana cost.
When The Current Support enters the
battlefield, choose a creature type.
Creatures you control of the chosen type get
+1/+2 and vigilance.
Whenever you cast a spell of the chosen type,
draw a card.
{2}: Exile this enchantment and return it to the
battlefield under it's owner's control.