This is a good card for Aggression builds that boost your basic ATK and want you to attack often. If you're just trying to build tempo by drawing during your attacks, you can pair this with Blood Rage. You could also double-dip if you can ready your hero (maybe with your hero ability, Battle Fury or Spoiling for a Fight if you're minion slaying, Limitless Stamina if you have a 14+ HP hero, or even Tenacity if you have the to spend), then play Spider-Man to ready Combat Specialist.

Adding a link to Specialized Training because I keep needing to search it when I look up the specialist cards.

I'm including the other available specializations below in case you want to hop directly to the other cards:

• Defense Specialist (+1 DEF) [After basic defense → draw 1 card]
• Front Line Specialist (+4 HP) [After you take enemy attack damage → draw 1 card]
• Surveillance Specialist (+1 THW) [After basic thwart → draw 1 card]