I have a quick question regarding the interaction between Mortal Strike and Heroic Strike. I just want to double check because it is such cheap damage. I run 4 of each so I often have multiples in my hand. Now if I play 2 Heroic on my Arcanite Reaper giving it plus 6 so it would be considered an 11 attk. Then drop a Mortal Strike that would do 12 ! All that for only a 4 resource investment ? Those cards can really interact in that manner? So a Mortal Strike for 12 then swing the Reaper for 11 , 23 damage for 4 resource , nice.

After you've already paid 7 for the Arcanite Reaper, yes it is "only" a 4 cost combo that requires 3 more cards. Not quite sure what the question is though, you seem to have it figured out.

I just wanted to make sure they interact in that manner , with any weapon. I wanted to make sure Mortal Strike covered attack bonuses and not just printed attack value.