The White Tree of Gondor

Whenever a creature enters the battlefield under
your control, choose one:
•You gain 1 life.
•Put a +1/+1 counter on target creature.
•Draw a card.
Already it had put forth young leaves long and
shapely, dark above and silver beneath, and upon its slender crown it bore one small cluster of flowers whose
white petals shone like the sunlit snow.