Thief - Warden or Sentry model
• Intrusion - Blink that sets transparency of the unit to 75%, and goes back to 0% over 4/6/8 seconds. Each level increases range and decreases mana cost <or cooldown>
• Pickpocket - Steals a small potion of gold from a player, the amount cant be more than the player has an no matter how much he has it shouldnt be over 20%. You can calculate the amount stolen with the agility, or just the level. Make sure it takes away from the player to.
• Spirit Blades - Locust with some type of blade model, huntress or shadow hunter etc.
• Ultimate: Thieves Guile - Gives a 15% chance to evade attacks, when evaded allows the next attack to do 50% bonus damage. (Might be hard to do but would be cool

)
Warlock - Pretty much anything with a staff
• Nether Pool - Creates a pool of twisting nether spirits at an area, sucking the life from units within and slowing them be 20/30/40% (Earthquake with flamestrike swirl effect)
• Spirit Armor - Discharges magical damage on a target hero, The armor has 100/250/400 life and uses the necromancers missle as an attachment to its head (Helmet lol!) <The antimagic shell has a life option...>
• Demonic Summoning - Summons a demon companion to assist the Warlock, The demon could be like WoW (Felbeast, succubus, infernal etc)
• Ultimate: Petrification - Creates a magical barrier around a target unit, making them invulnerable to magical damage but unable to move for 10 seconds.
Mechanic - An engineer model maybe
• Construct Golem - Creates an iron golem to fight for the engineer, the buff should be Fuel so when it runs out of fuel it dies

(Seriously though)
• Seeking Gizmo - Constructs a small gizmo in the ground at a target location, when a unit wanders near it pops up and chases the unit. If it catches the unit in a short enough time it will act like shadow strike, draining life and slowing the unit over time
• Engineering - Adds intelligence and a small amount of HP to the mechanic automatically
• Gadget Copter - Creates a gyrocopter that can carry 1 unit in, it has a small attack but is vulnerable to most things. Able to fly over obstacles. (If whatever your making has some gates or something this might ruin it, so you can make it a tank or something)
Thats all I got for now, hope you use one
