Warrior Abilities

As much as I find myself looking forward to this game - and I'm even coming around to the new combat - one thing is bugging me.  So many of the warrior skills seem to inflict elemental or necrotic damage and statuses (from what I can tell, necrotic damage has replaced spirit damage).  Some of these can arguably be explained through environmental or weapon/projectile effects, but others seem downright magical.

For example:

- Spectral Bulwark and Deadly Ground each create a type of necrotic aura that damages enemies
- Bloody Advance throws spectral blades that seek enemies and deal necrotic damage
- Fury of the Forge and Warden's Fire rain burning blades down from the sky
- Spirit Storm creates a necrotic whirlwind that siphons health from enemies
- Reaper conjures an etheral scythe that deals necrotic damage

I'm all for having variety in combat, I'm just confused as to how non-mages could actually execute some of these skills.  The unique ability of mages to channel magic from the fade - and the risks that come with it - is a fundamental piece of lore on which the series is built.  In previous instalments there have been in-game reasons for say, templars empowering themselves through lyrium or reavers tapping into the magic of dragon blood.

I guess it could be something to do with runes or even the ritual Solas started.  I just hope there is some kind of rationale beyond the good old 'rule of cool'.  As it is, I'm considering avoiding some these abilities when building warrior companions.