Domed Sanctuary

As Domed Sanctuary enters the battlefield, you
gain life equal to the size of your party. If you
gain less than 2 life this way, it enters tapped.
{t}: Add one mana of any color. Spend it only to
cast a creature that could join your party, activate
an ability of your party, or cast a spell or activate
an ability that targets your party.(..or a member.)
{w}{u}{b}{r}{g}, {t}: Your party phases out.