I've been doing a ton of mid game combos with Archer+Solas Rift Mage. Usually cast Barrier on my group to intitiate I have the bonus to Stamina off of It, Cast Stealth then;
Full Draw/Stone fist to Ruture
Winter Grap/Long Shot. to shatter Let archer finish to regain Stealth
Knockout Bomb/Dispel Causes Nightmare
Veil Stike on Tanks target, recast Barrier when available
Meanwhile Archer regains a new position takes shots at Tanks target and gets ready to finish units coming out of nightmare. Its been alot of fun its some tac caming but thats only to call up spell combos in difficult fights. In run of the mill stuff Solas casts Winters Grasp and Stone Fist combos on his own.