One Item I want as a Tank Jungler...

If there was just one item I wish I could build as a tanky jungler such as Amumu, Sejunai, Zac, or Nautilus, it'd be the Rod of Ages. It's such a great item, but you can't build it as a jungler. I mean, sure, you can build it, but after completing your jungler items, you wouldn't reach the full potential of the RoA until well past 30 minutes into the game. And yet, it's such a great item on so many of the tanky champions. There's a reason almost everyone built it on top lane Gragas and Maokai.

If there were a way to incorporate that item's role into the jungler's build, I think it would go a long way to solving the problem with tank jungler viability.