Daenerys Targaryen

If you control at least one dragon, Daenerys
Targaryen has hexproof and Indestructible.
When Daenerys Targaryen enters the battlefield,
put 3 colorless dragon eggs token with: "Sacrifice it,
then add 3 mana of any color to your mana pool.
Use this mana only to cast dragon spells."
{t}: Add {r}{r} to your mana pool.