I always find myself holding onto my ult for a long time because I'm never sure when to use it.

The times I will use his ult is basically only the following:

1. to use the bomb pickup trick

2. teleport to the other site with bomb on offense when we know all enemies are far away

3. teleport to a unexpected position post plant when on offense

4. quickly rotate if im across map and my team desperately needs my help asap

As you can see only one of these ever applies on defense and all of them are extremely niche. I've had multiple halves where I didn't use my ult at all. I want to stop doing this but I'm not trying to ult randomly. Do you guys have common scenarios where an omen ult is good to use?