impact delay

i remember a long time ago, possibly 1.12 or so, that there was a field in ability editor for some spells called impact delay. It allowed you to change at what point of the effect of blizzard or infernal or whatever you wanted the damage to be dealt. Is there any way to change that anymore? I have a blizzard ability that just creates ability/buff art in an area but it looks really cheesey because no units take damage for about 3 seconds of the art being there. I know that if i really wanted to i could just use damaging functions and stuff in jass but seems like a bit overkill for something that should be easy. Is there an easy way?

There is a field for infernal for impact delay but not for blizzard. But for blizzard i think casting time controls when the damage hits im not sure.