Why are 2 out of 4 convenant abilites for priest melee range?

I need to preface this by I havnt played with any of them yet since I dont have beta

But why are 2 of the abilities melee range? Like why can't you cast Unholy Nova (maldraxxus) from a friendly target or even on a enemy?

Ascended nova should be a instant spell you can after your duration so you dont have to move into melee range, like holy word: sanctify, a aoe that you aim at the ground

There is a reason I play range dps, because I dont want to stand in melee. I can even see some old fights (as I havnt looked at the new ones that much) where you wouldnt be able to enter melee range without risk of fucking up melees or tacts where you need to stack