Yes, you can. The bloodrush effect says "target attacking creature", therefore targetting your Akroan Crusader , giving +4/+4, trample, and spawning a 1/1 token w/ haste.
@TJMadMan ok cool I just didn't know if the ability bloodrush counted as a spell or not...Thank you!
No, you cannot. Heroic only triggers off spells. Bloodrush is an ability (one that works from hand, like cycling, but still an ability) and therefore does not trigger heroic. Your Akroan Crusader will only get +4/+4 and trample.
That's what I was thinking man @raithe000 Thanks for clearing things up a bit
oh, sorry about that! I completely read over the word "spell" in the heroic text xD
I read it as: "Whenever you target..." Sorry!
Please remember to select an answer when your question has been sufficiently addressed.
Also, heroic is a triggered ability. Triggered abilities trigger; they aren't activated.
@Epochalyptik did you mean heroic? because bloodrush is an activated ability, is it not?