Board Thread:League of Legends discussion/@comment-25532677-20141013050627/@comment-24208043-20141029051212

The only problem I see with Sion is his abilities scaling on two different damage types. This limits his potentail damage output. Only champion build I know that can use both AD/AP together is kayles AD/AP attack speed, life steal/spell vamp build.

His abilities are designed to have a counter used against them. This is ideal for balancing a champion that has the ability to stun chain you by himself. Unreliable can become reliable though with enough practice and a good item build that takes into consideration of what's needed at the moment and later. Building items that sustain him and let him tank  as he set ups his abilities works well at eliminating weakness but doesn't let him excel greatly without a team backing him up. The recomended items are based on eliminating his weaknesses and not based on increasing his potentail damage output into a carry.