New spoiler on
http://www.smfcorp.net/mtg-news-10242-exclusivite-commander-2013.html
Translates as
Nemesis of Identity

Merfolk Rogue
When he CIP, choose a player.
He has protection from that player (Cannot be blocked, targettes, damaged, or enchanted by a source controlled by that player.)
3/1
Definitely a new effect. Seems to be just about acceptable for killing opposing JTMS at the very least and just about affordable to be an aggro player. But is an untouchable 3/1 for 3 playable in Vintage?