Mausoleum of White

{t}: Add {w} to your mana pool.
{t}: Add {w}{w} to your mana pool. Use only
to cast a White Dragon Creature spell.
{t},{w},{w},{w}: Target White Dragon
creature gains Battle cry until end of turn.
{t}: Transform this card. Activate only if you
have 5 or more White Dragon creatures in
your graveyard.