Rule · Chapter 7
cr:7.2.3
Third, the “attack” event occurs and effects that trigger from attacking are triggered.
Example: The attack is Dread Triptych. The abilities “When this attacks, if you’ve played a non-attack action card this turn, create a Runechant token.” and “When this attacks, if you’ve dealt arcane damage this turn, create a Runechant token.” trigger and are added as separate triggered-layers on the stack.