Feruos, Aurora of Science

When Feruos, Aurora of Science enters the battlefield, declare a creature type. Put a hatred counter on each creature of that type.
Whenever a creature with a hatred counter on it
dies, you may discard cards equal to its power,
then draw cards equal to its toughness.
"I'm really excited now. I always learn so much from
a live dissection. Wait, no. A dissection sounds much
too humane for you."