Version 5.74

Items:
 * Oblivion Staff damage reduced to 22 from 25.
 * Fixed Dagon & Black King Bar from sharing cooldown.

Hero changes:
 * Removed Rider. Added new hero -- Tidehunter.
 * Changed Darkterror's model.
 * Improved Assassinate.
 * Reduced Akasha's attack range.
 * Fixed repicking Syllabear.
 * Removed Rider in favor of the Tidehunter.
 * Decreased cooldown on Reverse Polarity.
 * Re-changed Incapacitating Bite.
 * Improved Insatiable Hunger.
 * Buffed Take Aim.
 * Debuffed Static Field.
 * Fixed Silencer's ultimate tooltip.
 * Morph can no longer copy Sprout or Rain of Tears.
 * Buffed Light Strike Array and debuffed Ultimate.
 * Fixed Viper and Venomancer sharing the 'V' hotkey.
 * Buffed the AM's Spellshield slightly.
 * Fixed Laguna Blade's use tooltip.
 * Debuffed Eclipse.

Other changes:
 * World Tree no longer attacks.