There isnt rare to reach 4, even 5 (or more) DEF on a Protection-deck Hero Then you have a party wide mitigation of 4-6+ dmg per 1ER.

Thats incredibly efficient by its own, plus other singularities:

• Its NOT a defense, you wouldnt be declared as the defender (cant do retaliation damage, does not trigger Unflappable or alike)
• Its an interrupt that happens after knowing the amount of damage done, which prevents wastes and also loved by Ghost Spider (Hero)
• Does not need you to exhaust but still reduces the damge by your DEF. This is usually as good (or even better than) Expert Defense
• Can be targeted on anyone but yourself, opening for new exploitations:
• • Groot safely heals
• • Warpath can be safely triggered, allowing you to constantly play events like Hard Knocks and trigger Change of Fortune. On Solo, just exhaust warpath to defend you, then play Stronger Together keep him safe.

By himself alone, he is 4ER for 3 times 1-THW and 3 times 2-dmg (to minions), for a total of 3 THW and 6-dmg in 3 rounds

If we use another ally to thwart for the last arrow (or we improve him with S.H.I.E.L.D. Deputy or alike), his total raises to ~3-4 THW and 8-dmg in 4 rounds

If we use his last hit point to chump blocking the villain, we have 4ER for a total of ~2-3THW and 4-8dmg in ~3-4 rounds

His dependability of extra allies to hasten his arrow usagement impairs him, as his advantage in damage distribution is countered by its limitation to minions only; plus a slow tempo of ~2-3 rounds.

The only interesting thing is himself being both AVENGER and S.H.I.E.L.D., meaning he can get discounts from both Avengers Tower and Government Liaison (plus other small tribal benefits)

Is he still worth? I believe that, most of the times, he is not. But can have its niche.

• Spectrum has been dethroned for Teamwork's based decks. Also Unified Strike which is the oposite but final effects are very similar.

• Cost is too expensive or you need to tackle other urgent stuff first? tuck him under your Avengers Compound (your hero needs to be an avenger).

Other cards to benefit from his stats:

• "You Got This!" - discard for a final +3 & ready to your hero
• Go Down Swinging - discard for a final 4-dmg burst (ignores retaliation)
• Noble Sacrifice - discard for healing of 4 and extra tough on your hero
• Save the Day - discard for a final 4 thw without consequences

Si tu heroe necesita o aprovecha el irse a alter ego esta es una carta obligada en tu mazo, en la mayoría de las ocasiones te devolverá la mitad de vida al curarte por un coste muy bajo. Si además tu heroe es bueno preparándose es aún más obligada para irte a curarte y volevr después como heroe o hacer una recuperación milagrosa curándote dos veces.

Aliado obligado en cualquier de descarte como Domio o Adam Warlock, así como aquellos que puedan controlar el top para colocarla allí y luego descartarla como Starlord o Magik. Si además tienes la capacidad de recolocar cartas del descarte whitefox es siempre una apuesta segura, por lo que muy pocas veces pagarás su coste ( cosa que no deberías hacer salvo urgencias).