Sulvan, Light-Seeking Pilgrim

Lifelink, vigilance
Whenever you cast a white spell, you gain 2 life
and put a pilgrimage counter on Sulvan, Light-Seeking Pilgrim.
Whenever Sulvan, Light-Seeking Pilgrim attacks,
tap target creature defending player controls.
Remove six pilgrimage counters from Sulvan:
It gets +3/+3 and gains double strike.