Dark Seer

Dark Seer is a support caster hero that employs his skills to fully disorient his enemies through vacuums and illusions, as well as support his allies. As a melee hero, his overall attack and natural movement speed doesn't improve over time, making any follow-up melee attacks very risky. He's also a very versatile hero; He can gank with Vacuum, push with Ion Shell, initiate with Wall of Replica, support with Surge, giving him a persistent role on a team.

Tips

 * With a Stout Shield and healing items, Dark Seer can start jungling almost immediately.
 * If laning, be sure to harass enemies with Ion Shell by placing it on their melee creeps (for melee heroes) or ranged creeps (for ranged heroes)
 * Be sure to take at least 1 early point of Surge, as it can help escaping ganks and chasing, as well as giving more mobility.
 * When chasing, just put on Ion Shield and run next to the enemy without attacking, and use Surge if you need to catch up.
 * Wall of Replica is usually skilled after you've maxed both Ion Shell and Vacuum, as early game illusions don't deal much damage. Additionally, the relatively high mana cost at lower levels can be prohibitive, as you won't be left with much mana to cast other spells.
 * AoE spells, especially those that require positioning, greatly benefit from Vacuum, as you can place all of them together to ensure a hit.
 * Using Vacuum on enemy heroes to send them through your Wall of Replica will disallow foes from preventing illusions, as well as causing guaranteed damage from passing through the Wall.
 * Due to Vacuum and Ion Shell's instant cast, your usefulness in large team fights permit Dark Seer to synergize extremely well with heroes such as Enigma and Jakiro. Make sure to cast these abilities with Black Hole and Ice Path/Macropyre/Liquid Fire to maximize AoE damage and maybe turn the tide in battle.