[Concept] Jax update

For the most part, Jax's kit is fine.

It's simple, and it's effective.

I only have one issue with the current Jax: his ult.

Grandmaster's might is not an ultimate ability. It's two basic abilities crammed into one slot.

The spell is powerful in its own right, but pressing R as Jax doesn't give you some incredible spell capable of turning the tide... it's just a little bit of durability.

The THWOMP every third hit is pretty satisfying, but even then it's a base already covered by his W.

The goal here is to preserve what is fun about the current Jax while giving him a fun ult to use.

Abilities that aren't mentioned are unchanged.

W: Empower 7/6.5/6/5.5/5 second CD, 35 mana passive: Every third basic attack deals 60/100/140/180/220 (+.35 AP) bonus magic damage. active: Reset your basic attack timer and prime Empower.

R: Form of the Grandmaster 80 second CD, 100 mana Jax marks out a target area (250 range, 500 radius), becoming untargetable for 4/5/6 seconds after a 1 second channel. While untargetable, Jax will basic attack random enemies within the circle one every 0.5/0.45/0.4 seconds. These basic attacks knock the target 250 units towards the center of the circle. Target priority is as follows. Low HP champions >> champions closest to the edge of the circle >> any champions >> minions/monsters. When the spell runs out, or when Jax reactivates this ability, he will reappear at the center of the circle.