Neutra, Goddess of Balance

Indestructible, lifelink, vigilance
Neutra can not attack or block unless an
opponent has 2 or more permanents than you.
If defending opponent has 3 or more creatures
than you, Neutra can't be blockable.
{w}{b},Sacrifice a creature: Place +1/+1 counters
equal to that creature's toughness on Neutra.
{u}{g},Sacrifice a land: Draw a card.