Kay, the Seneschal

Vigilance
{2}{w},{t}: Create a 2/2 white Knight creature
token with vigilance.
{b},{t}: Tap X untapped Knights you control:
Destroy target creature with power X or less.
''I will ask no more of you, but that ye will
make my son, your foster brother, Sir Kay,
seneschal of all your lands.'' —Ector