Wyrmrest Temple

Wyrmrest Temple Enters the battlefield tapped
{t}: Add {u}
{t}: Add one mana of any color. Spend this mana only
to cast a dragon spell, and that spell can't be countered.
Many legends hold that the five great Dragon Aspects
were blessed within this fortress and given their charge to
watch over the budding world. Perhaps it is for this
reason that dragons nearing the end of their lives come to
the Dragonblight to enrich the land with their passing.