Defense Specialist

This is a good card for protection if you plan to not take damage for other card effects to proc. If you're planning to use Protection to just reduce incoming damage (e.g. Bishop WANTS to take damage) and someone else needs this card, I'd recommend Front Line Specialist instead.

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:

BardicMonk · 3
Namora

Namora has two rare traits that benefit a Strength in Diversity deck, but barring any Atlantis synergies in the future, she's quite average. It's not hard to get an extra use or two out of her, but you can't really get that value until several turns after spending 4 resources on her, making her a low tempo play. Strength in Diversity decks are probably where she'll get the most play, and given that that deck wants it allies to stick around for a while, she makes a good fit.

Stretch22 · 2184
Agree with most, Namora is good, when you play her early and now the game last long — nosiak · 215
For a 4-cost ally you can actually build a 4 or 5 sized board of 4-cost allies that takes no cons damage and stays forever instead of just longer, as namora is offering — matchet · 355
Justice Served

I think with the inclusion of heroic conditioning this card's value went up - you get more value out of it as you have more basic thwart to use. toss in symbiote suit and you get 5 thwart for 1 in a specific deck. I started including 2 copies in decks that thwart with hero more than events (captain america, storm, phoenix)

also it can be used as an emergency ready in situation where you need to heal your hero and game exhausted you (pesky villain) as you can thwart with events and then just go to alter ego and recover.

Viravandrel · 17
Hope Summers

"Gains each TRAIT on your identity"

From my understanding, she acquires and retains traits until she leaves play.

Theoretically, she is the only character who can simultaneously possess all traits in the game if you play Rogue

Mzero · 3
Captain America

I know ZaneBrick posted the text from Captain America's Shield below.
But I prefer having the actual link for easy access ;)

(Additional text to reach 200 characters)