User blog comment:Vitios/Yagdra, the Ash Worm/@comment-7814894-20130404204716/@comment-7814894-20130404231436

I figured a centipede because it would allow him free movement, while still maintaining his burrowing and tunneling. In his current state, he is vulnerable to almost every AoE skillshot, and then once he is hit he is trapped for an additional 3 seconds. Add in how he takes true damage in obstacles, he then becomes trapped for even longer taking even more true damage when using his own Ult.

Why put an increasing distance for Fury on his R? Currently, he has the potential to have his R running indefinately. You said "He would actually move faster than any other champion while out of combat, as long as he was travelling at least 400 units with each tunnel. This is because tunneling has a cooldown of one second, and it would take him exactly 1 second to travel 400 units. Which means that he would have a constant movement speed of 400 while out of combat, not including bonuses." This means all he needs is to move 600 units (5 for every 200 since it is half) for the cost to be negated, and since bonuses aren't included this is attainable, unlikely, but attainable.

As for initiating, you haven't really given him a role. His burrowing, high Movement Speed, AoE crowd control with short range and slowing/damaging trails, and his bonus damage after surfacing make him suitable for initiating. Whereas, If he mids, he is weak to every champ with an AoE or skillshot, such as Brand, Lux, Annie, and Cass. If he tops or lanes against any melee, all the opposition have to do is get in to hit him once and he is trapped for 3 more seconds of beating. couple that with any time someone hits him from range on bot and he is stuck for 3 seconds with his only defense being a "slow moving" skillshot, makes him vulnerable to almost every support as well as ranged champs such as Tristana and Cait. Basically, if someone hits him first he's toast since he can't escape.