Dragon's Brood

Dragon's Brood enters the battlefield tapped.
{t}: Add {r} to your mana pool.
{r}{r}, {t}: Create a 0/1 red Egg creature token with
defender and place two time counters on it. At
the beginning of your upkeep, remove a time counter. When the last is removed, sacrifice the token and create a 2/2 red Dragon creature token with flying. Activate only if you control a dragon creature.