Dragonborn Ring of Power

{t}: Add {c}{c}.
If it becomes equipped, it loses its ability to
tap for {c}{c}.
If equipped to a Dragonborn creature, when
that creature attacks, draw 2 cards.
If the equipped creature is not Dragonborn,
when that creature attacks, draw 1 card.
Equip: {u}{u}
Unequip: {u}