This is Mirana's leap spell from dota. I thought of uploading it because it's a little different from other leap/jump spells uploaded here. It's non-targeted and gives a speed boost.

Here's the code:

• Setup
  • Events
    • Unit - A unit Starts the effect of an ability
  • Conditions
    • (Ability being cast) Equal to Leap
  • Actions
    • Set Caster = (Triggering unit)
    • Set Angle = (Facing of Caster)
    • Set Horizontal_Distance = ((300.00 + (30.00 x (Real((Level of Unknown (A000) for Caster))))) / 16.00)
    • Set Vertical_Distance = (300.00 / 16.00)
    • Set Caster_FlyingHeight = 0.00
    • Unit - Add Crow Form to Caster
    • Unit - Remove Crow Form from Caster
    • Unit - Pause Caster
    • Custom script: call SetUnitPathing(udg_Caster, false)
    • Countdown Timer - Start Timer as a Repeating timer that will expire in 0.03 seconds
    • Trigger - Turn on Movement <gen>

This is the Movement code:

• Movement
  • Events
    • Time - Timer expires
  • Conditions
  • Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • Counter Less than or equal to 8
      • Then - Actions
        • Set Caster_FlyingHeight = ((Current flying height of Caster) + Vertical_Distance)
        • Set Caster_Loc = (Position of Caster)
        • Unit - Move Caster instantly to (Caster_Loc offset by Horizontal_Distance towards Angle degrees)
        • Custom script: call RemoveLocation(udg_Caster_Loc)
        • Animation - Change Caster flying height to Caster_FlyingHeight at (Vertical_Distance / 0.03)
        • Set Counter = (Counter + 1)
      • Else - Actions
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • Counter Less than or equal to 16
          • Then - Actions
            • Set Caster_FlyingHeight = ((Current flying height of (Triggering unit)) - Vertical_Distance)
            • Set Caster_Loc = (Position of Caster)
            • Unit - Move Caster instantly to (Caster_Loc offset by Horizontal_Distance towards Angle degrees)
            • Animation - Change Caster flying height to Caster_FlyingHeight at (Vertical_Distance / 0.03)
            • Custom script: call RemoveLocation(udg_Caster_Loc)
            • Set Counter = (Counter + 1)
          • Else - Actions
            • Countdown Timer - Pause Timer
            • Unit - Unpause Caster
            • Custom script: call SetUnitPathing(udg_Caster, true)
            • Set Horizontal_Distance = 0.00
            • Set Caster_FlyingHeight = 0.00
            • Set Counter = 1
            • Selection - Add Caster to selection
            • Set Caster_Loc = (Position of Caster)
            • Custom script: call RemoveLocation(udg_Caster_Loc)
            • Trigger - Turn off (This trigger)

Give credit to me for the code and to DotA for the ACTUAL SPELL.
Please use Warcraft 3 version 1.24d for this just incase it doesn't work.

Keywords:
DotA, leap, jump, DotA spells, dota, dota spells, Mirana, Mirana spells, DotA leap, dota leap