Out of sheer boredom I sharded this guy and have forced myself to use him on my attack team this week (see Mjmxiii PvP thread). He can be useful with a set of energy talismans and a set of freeze - most teams I've faced stay energy starved - but this can be done with many toons - so all in all - don't do as I did I've simply reached that point where I'm challenging myself due to lack of new content...
I'm all for events that help new or mid-level players, and glad NF is having frequent events. Sometimes we hardcores forget what it was like back then. Newborn? Worth it. Blue CotD? Not worth it.
Immunity is most helpful against SSDs and Green Harpies - exactly the two opponents who will shred this blue bozo due to a class disadvantage. He does do well against Beelze and Red Pyros
I think an event to find frags for Shell talismans would excite new and old players alike...