Adeptus Sororitas

As long as your devotion to white is 4 or higher, Adeptus Sororitas has lifelink.
As long as your devotion to black is 4 or higher, Adeptus Sororitas has first strike.
"The Sisters of Battle seek to purge all worlds in
cleansing fire. They stand in unquestioned service to
Him and it is in His Light that they walk."