The Q-W combo is insanely broken. Imagine you're 250 units away from an enemy hero, and you cast your W at them (assuming maxed spells). It creates a Light Mark when cast, then the projectile hits (360 dmg), then it creates another Light mark right next to the first one (enemy is within AOE of both), and then both marks explode after .6 seconds dealing 680 more damage. That is 1040 damage for 150 mana, and all you need to set it up is a teammate with a stun or an invis item or a blink or literally anything that lets you get next to people. AND if you get shard, you can do it twice instantaneously, causing 2080 magic dmg in the space of 2 seconds. It's too much. Ultimate is also super broken. 0 healing AND 90% vision reduction AND non-dispellable? I think picking two of these three effects would make it much more balanced. I like the pretty short duration of the Q meaning its not a free Treant aghs, and the R is one of the more inventive scouting abilities I've seen. I don't like the aghanim's effect either because that just exacerbates the damage problem. I think everything would be more balanced if W spawning Light Marks was locked behind the Aghanim's, forcing you to invest 4200 gold to be able to burst like literally no other hero has ever been able to do. It's definitely an interesting concept, but as it is now this hero could literally get a rampage comboing off of a vacuum or RP for 150 mana once he's level 8.