Helena, Hero of Uriman

{1}{g/w}{g/w}: Helena becomes a Human Knight with base power and toughness 7/7.
{2}{g/w}{g/w}: If Helena is a Knight, she becomes a Human Spirit Knight with indestructible and lifelink.
{3}{g/w}{g/w}: If Helena is a Spirit, put five +1/+1 counters on it.