Runeglaive should replace Poachers, not Magus

Because Poachers is not an enchantment it is an item. Having Magus and Runeglaive would be a complete waste of enchantment types. Also Poachers is very useful if your goal is to completely shut out the other jungler by stealing all of their camps through counterjungling, which is exactly what junglers like Nunu and Shyvana are supposed to do. If you counterjungle the enemy into the ground they can't gank at all because they will be so behind in experience and items that they essentially become a non-issue.

They shouldn't be removing Magus anyway, it's a stupid idea. Add Runeglaive by all means, but why the hell does that mean they have to remove Magus? What the hell is Fiddlesticks going to buy now? Runeglaive is a TERRIBLE item on him. He should probably just forget jungle items and stick to Doran's Ring starts. And so much for building jungle Amumu, Malphite or Cho'Gath as anything OTHER than tanks (although I admit that was pretty weird niche anyway).

for the extra mana maybe, adding a spellblade to magus would be too strong. and it wouldnt replace poacher it would have to be another enchantment. like clarity summoner, or like mana boots in dota. poacher belongs it just needs something.

Poacher's is the smite upgrade, Runeglaive is the enchantment. They're completely separate from each other in every way.