My understanding of a mapped key, is that each action is sequential.

The first one tries to fire off, and then the next, until the last one attempts to fire off.
I have a mapped key, which executes when characters switch windows (the leader swap mapped keys)...

They are:
- Slot 1 is Leader (Melee)
- Slot 2 is Leader (Melee)
- Slot 3 is Leader (Melee)
- Slot 4 is Leader (Melee)
- Slot 5 is Leader (Melee)
- Slot 1 is Leader (Caster)
- Slot 2 is Leader (Caster)
- Slot 3 is Leader (Caster)
- Slot 4 is Leader (Caster)
- Slot 5 is Leader (Caster)

Rather than run JambaMaster or JambaFollow on a switch, I run the relevant Slot X is Leader (Type) mapped key.
Each of them runs JambaMaster or JambaFollow, in addition to other things.
Each is one step long, meaning everything occurs each time... all on the single press.

Slot 1 is Leader (Melee) looks something like this:
- Leave ATG: NW > Target: All
- Leave ATG: NE > Target: All
- Leave ATG: SW > Target: All
- Leave ATG: SE > Target: All
- Join ATG: NW > Slot 2.
- Join ATG: NE > Slot 3.
- Join ATG SW > Slot 4.
- Join ATG SE > Slot 5.
- Do Mapped Key > High Settings > Current Window
- Do Mapped Key > Low Settings > Other Windows
- Do Mapped Key > CTM On > All Windows
- Do Mapped Key > JambaMaster > Current Window

Each of the Leave actions has to occur prior to any of the Join actions, otherwise my dynamic spread out key would not work.
Spread Out
- Keystroke Actions > W + E > Target: Group NE
- Keystroke Actions > W + Q > Target: Group NW
- Keystroke Actions > S + E > Target: Group SE
- Keystroke Actions > S + Q > Target: Group SW




The manifesto suggests a random ability will fire off...
If we were to mash a bunch of keys....

On Down:
1 chance of Howling Blast.

On Up:
1 chance of Howling Blast.
1 chance of Frost Strike.
1 chance of Frost Strike.
1 chance of Necrotic Strike.
1 chance of Death Coil.

It does seem to be fairly random.
Not sure if that's because Warcraft receives 5+ keybinds within a millisecond of each other... and interprets them as simultaneous and then randomly does one of them?