Subrule · Chapter 1
cr:1.6.2c
A triggered-layer is a layer created by a triggered effect. A triggered-layer is created before it is put on the stack, and then can only exist on the stack.[6.6]
Example: Snatch has the text “When this hits, draw a card,” which is a triggered effect. When this effect is triggered, it creates a triggered-layer to be put on the stack with the resolution ability “Draw a card.”