The Barking Parrot

When The Barking Parrot enters the battlefield, you may reveal any number of Bard cards from your hand. If you do, add X mana in any combination of colours to your mana pool, where X is the number of Bard cards revealed this way.
{t}: Add one mana of any colour to your mana pool. Spend this mana only to cast Bard spells or to activate abilities of Bard permanents you control.