Ashe, The Frost Archer

When Ashe, The Frost Archer enters the battlefield target a creature. Target creature
has 0 power until end of turn along with
all creatures your opponent controls with 3 or
less toughness. Draw 1 card.
At the start of your turn target a creature your opponent controls. It has 0 power until end of
turn. Creatures your opponent controls with
0 power cannot block.