The name of at least one face must be written on the substitute card, and any other information visible on either face of the card may also be written
If you want some pesky, creatures that offer you life drain here and there, and draw out the flying hate, this was your list
If you're going to cast Ghalta, I highly suggest having some kind of boardwipe protection first like the Skullspore Nexus just before this, or at least have something that gives your creatures haste so that you don't give your opponent any chance to fight back
For details regarding language availability, look to our WPN product pages at the First Look for each set
The static ability to give all your Rats fear is useful to get in for guaranteed damage, as it makes it so your Rats can only be blocked by artifact and/or black creatures
By sending one of their cards back, you force them to discard the only one left, which is guaranteed to be their strongest or most valuable card