The White Stone of Ancients

Defender, flying (This creature can't attack,
and it can block creatures with flying.)
When The White Stone of Ancients dies, return another target creature card from your graveyard
to your hand.
{2}{w}{w}, Exile The White Stone of Ancients from
your graveyard: Until end of turn, you may play
a Dragon creature card from your hand
without paying its mana cost.