White Tree of Gondor

Other white creatures you control get +0/+1.
Whenever another white creature you control
attacks alone, that creature gains your choice of
first strike or vigilance until end of turn.
"They guard it because they have hope. A faint and
fading hope that one day it will flower. That a king
will come and this city will be as it once was before
it fell into decay." ~ Gandalf the White