The recent changes to crystal blaze ability has made it do no damage at all to destructible objects in the game world.
Prior to this patch, these abilities worked against such items as the locust mounds in scorched desert and cotsg, and the brambles trapping the spirit in the shadowy forest, etc.
Dropping this ability now does no damage these items. With the locust mounds for example drawing out new waves of locusts (by using other damage attacks) causes them to enter its range and they take damage, but the mound its self still does not.