I'm having none of these issues with his Q or his R... The problems I'm seeing are that his E is funky. You have to send a soldier to a location using his Q to engage or disengage, but you have to have a soldier summoned to do it... Requiring him to use his W... so you have to use all three of his Abilities to get away or engage the opponent, very mana taxing. His W needs a better range to summon his soldiers in my opinion. His E needs to just dash to his soldiers and not get blocked off; it should have options to dash to the **opponent and stun them, It would be cool if you could dash to allies **with it as well, that wouldn't be unreasonable if it were that.
He's completely poisoning reliant on his soldiers, so why completely punish him with the functions of his E? Really high cool down rate on it.
Arrows like Oriana's ball would be nice, the sand lines are a cool effect though.