Block

Block is a card class exclusive to Rivals games and is not to be confused with Defense. It increases the cost of your Super Hero/Villain to prevent your rival from killing you during a Confrontaion, similar to Defense in NHL Power Play. It is possible to use more than one in a single turn, but keep in mind that they'll all be discarded, so when your turn comes around you don't get those back. Each Block has Block as its secondary effect, which is functionless outside of Rivals, so although the cards can be used in any normal game for their primary effects, their cost is unnecessarily greater than a non-Block with the same effect.

Rivals 1: Batman Vs. The Joker

 * Harley Quinn
 * Superman
 * Killing Joke
 * (under construction)

Related cards

 * Lucius Fox (a Defense that increases your cost)
 * Poison Ivy (an Attack that targets Blocks)
 * Defenders (same function as Blocks, but in a different setting)