Senna, Sentinel of Light

First Strike
Whenever a creature you control dies, if that
creature's name was Lucian, The Purifier, put a vengeance counter on Senna. Senna, Sentinel of
Light has +1/+1 and double strike as long as she
has one or more vengeance counter on her.
"Our Sentinels are the first line of defense between the
tide of restless undead and the realms of man. We hit
first, hit hard, and NEVER back down when the lives
of our companions are on the line."