Slice them All!

Until end of turn, target creature you control
gains fierceness 3. Then, it deals damage equal to
its power to target creature an opponent controls.
(Whenever this creature deals lethal damage, put
three +1/+1 counters on it.)
Until end of turn, whenever a creature you
control deals lethal damage, create a Blood token.
(It's an artifact with ''{1},{t}, Discard a card,
Sacrifice this artifact: Draw a card.'')