I love cards with really specific protections. This card isn't just protected from -1/-1 and +1/+1 counters, but also gold counters, -2/-1 counters, rust counters, magnet counters, hourglass counters, and sleep counters. It really works well with Persist/Undying since is would return without a counter on it as well as a ton of combos that involve those things (I'm thinking about Mikaeus, the Unhallowed and Ashnod's Altar for starters). I just wish it cost 2 instead of 3. Other than that, it's pretty good for what it is.
Cons: A bit too expensive