Poacher's knife, the movespeed up on killing a large monster should be transitioned elsewhere.
(white smite)
A few thoughts on this item: I thought Riot considered team snowball was a bad thing, while personal snowball to be acceptable.
As things are right now, counterjungling is a team effort. If the counterjungler pulls it off, his team is snowballed (not so much for him.)
The item should feel more satisfying since it's more risky than simply killing the enemy jungler ( blue smite ).
I'd appreciate it's item route to have a ward/sweep or raw bonus movement speed rather than the crazy 175% MS on kill; it's not very necessary imo.