Subzero, Tundra's Guardian

When Subzero, enters the battlefield tap up to X
target creatures you don't control, those creatures
do not untap for as long as a guardian is on the battlefield.
You may tap two other untapped creatures you control, Subzero gains ward{3} until end of turn.
At the beginning of your first combat step choose
a creature you control, that creature gains myraid.