Holo, The Wise Wolf

Lifelink Hexproof
All of your lands have "{t}, gain {w}, {r}, or {g}"
When Holo enters the battlefield, if life was used
to cast it, gain {w}, {r}, or {g} equal to the amount
of life used. If no life was used, draw a card.
Sacrifice a land: Place X +1/+1 counters on Holo,
Where X is the amount of mana used to cast it.
Then, transform Holo.
"Awoooooooooo"