Dota 2/Magina the Anti-Mage

Anti-Mage is every spell caster's worst nightmare. He can quickly drain mana with every attack, leaving spell-dependant heroes defenseless. He can also survive devastating spells with his Spell Shield while his Blink helps him hunt down fleeing targets or escape from a dangerous situation. Once his enemies' mana pool run dry, a Mana Void will finish them off effectively. Anti-Mage is one of the most popular hard carries in the game, and one of the most feared ones too.

Mana Break
Mana Break lets Anti-Mage burn a portion of his target's mana with every normal attack, as well as dealing 60% of mana burned as bonus damage. While the mana burn doesn't seem like a lot, Anti-Mage's fast attack speed can make it drain away frighteningly quickly. Very devastating against mana-reliant intelligence heroes or strength heroes who already have low mana pools.
 * Ability: Passive
 * Damage: Physical
 * Mana Per Hit: 28/40/52/64

Blink
Blink lets Anti-Mage teleport a short distance to the targeted area. This ability has a myriad of uses. You can use it to escape an attempted gank, chase down wounded enemies, bypass terrain obstacles and to simply get to somewhere quickly. With a 5 second cooldown at level 4 you can easily spam it constantly to give you great mobility.
 * Ability: Target Point
 * Range: 1000/1075/1150/1150
 * Mana Cost: 60
 * Cooldown: 12/9/7/5

Spell Shield
Spell Shield grants you additional magic resistance on top of you base 25% magic resistance, reducing the magical damage by a lot, and it stacks with other magic resistance granting items. Obviuosly, this ability can help you tank powerful magical spells.
 * Ability: Passive
 * Resistance: 26%/34%/42%/50%

Mana Void
Mana Void deals damage for every point of mana missing on the target unit to them and any surrounding enemies. A very deadly ultimate, it will more than likely finish off any enemy hero you focused on. Try using it on heroes with high mana pools but just used a lot of spells to do more damage.
 * Ability: Target Unit
 * Affects: Enemy Heroes
 * Damage: Magical
 * Damage: 0.6/0.85/1.1
 * Stun Duration: 0.1/0.2/0.3
 * Radius: 450
 * Mana Cost: 125/200/275
 * Cooldown: 70