Isobel, Last Light Guardian

Lifelink, vigilance
Aura spells you cast cost {1} less to cast.
When you cast an aura spell, you may pay {w/u}{w/u} or 3 life. If you do, copy that aura.
You may choose a new target for the copy.

I'd be a poor cleric indeed not to avail of a blessing when I see one.