Valyria

As Valyria enters the battlefield, you
may revel a Dragon card from your hand.
If you don't, Valyria comes into play
tapped.
{t}: Add {1} mana to your mana pool.
{t}: Add one mana of any color to
your mana pool. Spend this mana
only to play Dragon creature spells.
Dragons cast this way enter the
battlefield with a +1/+1 counter on them.