how does concealed work? can a character like merlyn target concealed characters? or does it need to be specified? who can block concealed characters? what can u get out of concealed? direct damage?

thanks!

oh and whats crossover? just a teamup?

Concealed is a trait on Characters or Equipment that basically means "when this card is recruited, it comes into play in your hidden area." Characters in the hidden area can't be attacked, can be the target of effects (like Merlyn's), and basically either always get to use their effect each turn or attack every single turn.

A concealed character still has to attack a character if your opponent has an unstunned visible character. Basically, if you couldn't normally be attacked directly the hidden character still has to attack whoever is in front of you. If you only control concealed characters, though, your opponent gets to swing away at your face. ;)

Crossover is a keyword that teams up two or more teams in your hand, KO'd Pile, Deck and Resource Row as well as in Play.

Hope that helps. :)