This card's best use is to prevent consequential damage to allies. There are allies like Dum-Dum Dugan whose activations deal 2 damage to them, which gives you even more value. It also keeps allies like Ms Marvel and Mantis who damage themselves with their abilities around for longer. Very versatile card.

This is such a strong card for Ghost-Spider. It is (to my knowledge) the first protection card that triggers her effect in the the player phase (if you have a Web-Warrior Ally that would take consequential damage and there are quite some of them that take two damage for one of their stats) but it can also be used in multiplayer to block multiple attacks and still be ready next turn (only downside is that one of your allies might be exhausted).

Here is how it work:

1. you defend the first attack normally
2. when one of the other players is attacked you block with one of your Web Warrior allies and then play Stronger Together to reduce the damage (hopefully to 0) and ready Ghost-Spider afterwards.
3. if really needed you could block another attack now since you are ready again.