Now, that said, Judge's Familiar is a very fine Magic Card. I love it to tears. (It carries a Civic Saber in its little talons like a BAWS.) However, the only penetration it has seen into eternal is Legacy Blue Martyr, that I'm aware of.
Wanderer is an upgrade over Familiar, though. It's a better tribe and it has the potential to tax spells more heavily if you're playing a bunch of Flash creatures. Like, you know, the Spirit Flash Lord himself, Rattlechains.
Good enough? I don't know. But, hey, I was doubtful that Eldrazi was good enough when they spoiled the recent midrange Eldrazis, and they've made some penetration. It did require the restriction of Golem to do that, however...