Nina, Ethyria Matron

Tapped creatures you control gain ward —Skip
your next untap step.
{1}{w}{u}, {t}: Until end of turn, target creature
you control gains enlist and may enlist an
additional creature. (As this creature attacks, you
may tap a nonattacking creature you control without summoning sickness. When you do, add its power to
this creature's until end of turn.)