Mirray, the Shielding Moon

Indestructible, Lifelink
Reef 5: If you control 5 other white and/or green permanents, you have Mirray's Reef.
Mirray can't attack or block unless you have her
reef.
{2}{w}{g}: Until the end of the turn, target creature
gets +X/+X , where X is the number of creatures
you control.