The Scape Expansion Pack!

Mysticism - the magicy, prayer-like medic skill.

The primary difference is that you wouldn't use runes to "power" the spells, instead you would use a set chunk of prayer points...and you also wouldn't get any xp and it might even take out some special attack energy...it would also certainly have cooldown times for the attacks

I was thinking of something along those lines.

For example

Saradomin! I beseech you to flay the flesh from these evildoers!

*Wall of holy white flame comes down from on high*

*chaos druid crumples*

or...

Zamorak! Please destroy these weaklings!

*black fire jets from the ground*

White knight dies...

Although I didn't imagine, nor want, the whole actually-asking-the-god aspect. In terms of gameplay this would be similar to Magic, only it would drain some sort of gauge (instead of consuming runes) and would be predominantly para-combat.

It does sound a lot like magic... but eh. Maybe?

I know - I'm still convincing myself.

Okay, I've convinced myself. If Magic is being split into Wizardry and Sorcery for specified reasons, then Mysticism can be separate, no matter the similarity to Magic. However, training as a mystic would have to be restrictive. I'm thinking the Medic in Team Fortress... actually doing medic-stuff means you can't engage in combat. So... forming a life-link with another player, just a random term I made up, could mean that an amount of his damage is dealt to you instead (and you can eat to replenish your own lifepoints). However, you cannot fight whilst doing this. Maybe the weapon you need to wield in order to link cannot be used in combat, or something. *shrugs*