Triggering Icon in Android Style

This Triggering icon has Android KitKat style. If you use the icons for Android apps, we recommend using our latest Material Icons icon pack (please check our sidebar on the right). Otherwise, it's a solid icon pack that looks good in small resolutions, either on the web or in print. It's characterized by thick lines, smooth corners, and is optimized for 24x24 pixels.
This is an icon of an arrow pointing downwards towards another object. The arrow is crooked and jagged and looks almost like lightning. The object has round corners and looks almost like a cloud. This icon looks like an arrow of lightning striking down on a cloud.

Related to Triggering Icon

Related icons are the icons with matching tags, as well as all gaming icons. All icons are in the same flat style. You can either download free PNG icons or buy SVG vectors

Idea of Triggering Icon by Rubber Duckie

We've received the idea on September 27, 2013 and created the icons on October 09, 2013

Three icons to represent that something is triggered or put into motion. The icons shows a "triggering mode". I have looked at the icons in the icons8 library, but the best candidate I could find was this one:
( a boot / shoe kicking at something, like somebody just got kicked out )

Well, THAT icon doesn't represent what I would like to express in the icon. I want to tell the user that something is triggered either manually or by some external event (incoming call, timer that goes off, etc).
Idea 1: a human hand/finger that puts dominoes into motion. icon examples:
 
If you combine these two pictures into one icon, you get the result of one hand with three domino bricks of which the first domino brick leans/falls against the second domino brick and the second domino brick almost falls to the third domino brick, but not making contact with the third brick yet.
Real world examples: Icon shows a hand (or part of a hand) tapping the first domino brick:
Triggering icon idea or: Triggering icon image idea

For icon two I have in mind a lightning sign like Triggering icon image idea. I would like to see this icon be used for icon two with the icon being inverted and without the rounded edges, so that only the thunderbolt is shown. The thunderbolt should "strike down" on something, so that it is clear to the user that something else is triggered. Maybe just like in the previous mentioned boot/foot icon some "kick" movement is depicted?? I am aware that a "thunderbolt only" icon (electricity) already is present within the icons8 library, but that is not what I mean. THAT icon doesn't show that something is put into motion. Third icon should be a hand tapping a domino row in which the domino row is shown from foreground to background (clearly visible: the domino bricks disapear on the horizon. This is what I mean:
Triggering image idea (but then in the reverse order: foreground domino bricks fall first)
I was thinking of this icon: ​ in combination with a tortuous row of dominoes (large at the foreground, small in the background). Note: icon request 1 and icon request 3 are going to be using for different situations.

Rubber Duckie
Fantastic icons! Thank you!