first create some skills such as.. thunder clap, or taunt, instant cast, not targetable.
And name them as you want, for example
Fast Mode (Thunder clap ability base)
Normal Mode (taunt base)
Turtle Mode (war stomp base)
then add those skills to a dummy unit
then once you've got those, you now have to trigger
you have to make the game to select the unit, and let the players select the ability (or mode in this case)
once a mode is clicked, make an action
um give me a sec, i'll make them for you...
EDIT:
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Start
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Events
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Time - Elapsed game time is 0.01 seconds
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Conditions
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Actions
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Selection - Select (the dummy unit)
with that you will have your dummy selected at gamestart
and then create another trigger
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Mode Selection
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Events
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Unit - A unit Finishes casting an ability
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Conditions
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Actions
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If (All Conditions are True) then do (Then Actions) else do (Else Actions)
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If - Conditions
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(Ability being cast) Equal to Fast Mode
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Then - Actions
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Trigger - Turn on (Fast Mode Trigger)
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Else - Actions
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If (All Conditions are True) then do (Then Actions) else do (Else Actions)
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If - Conditions
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(Ability being cast) Equal to Normal Mode
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Then - Actions
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Trigger - Turn on (Normal Mode Trigger)
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Else - Actions
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If (All Conditions are True) then do (Then Actions) else do (Else Actions)
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If - Conditions
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(Ability being cast) Equal to Turtle Mode
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Then - Actions
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Trigger - Turn on (Turtle Mode Trigger)
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Else - Actions
by doing that it will determinate what button (or skill) has been pressed, and you will be able to do whatever you want, for example by doing this one of those triggers could be...
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TURTLE MODE TRIGGER
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Events
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Conditions
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Actions
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Unit - Add Slow Aura to (Unit)
that aura lets suposse it's added to some unit hiden in the map, that affects EVERY unit in the map, with a range of 99999, and so it would slow down every unit in the map and make a succesful TURTLE mode.
hope it's of help
