Which would you choose?

[BB Shockwave]

Really? I find it hard to use, since dragons fly and it's not always easy to predict where they'll land to attack your units. Blacks also often use Wake of Fire instead of attacking.

I found Trap to be extremely usefull against Giants, though.

[Razorflame]

they mostly fly to the weakest ranged unit



place a trap there

and bye bye blackie