Boulder Attack

Boulder Attack is a special enemy attack that can be used by Minibosses and Bosses in the game The Metronomicon.

Description
For the duration of the attack, normal casting is possible, but boulders will fall from the top of the screen. If you are on the same lane as a boulder when it is falling, regardless of whether you are casting notes or not, it will eventually strike the hero in that lane and deal damage if you have not moved off the lane. The only way not to take damage from boulders is to move off the lane with the boulder; they are harmless otherwise.

Boulders take turns to fall, one at a time and randomly determined, on each of the four lanes - there are visual cues at the very top of a lane that indicate when a boulder is about to fall down a lane.

Exploits
What makes these attacks annoying is not so much the damage itself, but rather the fact that boulders can obscure notes. There is a slight exploit to aid with this - a boulder is not reset when the game is paused then un-paused. Therefore, if you need to finish casting a specific ability on a specific lane and do not mind taking damage, pause then un-pause the game, tank the boulder damage, then continue hitting notes.