Dunno if it already exists, but a frame ticker would be good.
So you could use it in conditions, eg:
Every 10 frames, offset 3
--- do something
Would mean that, after 3 frames, a 10-frame ticker initiates.
This'd be good for having many instances of the same object. You could do this:
Every 10 frames, offset random(10)
--- do something
All powerups would move at the same rate, but they'd be randomly offset. So you don't get all coins rotating in perfect unison, etc.
And if you could create a function to run in 10 frames' time:
On Start
--- Function: Call 'Something' in 10 frames' time
On 'Something'
--- action