If you could combine ANY 2 spells form the game to form a new spell.

[OnlineSamantha]

Bladestorm and Fan of Knives. Yeah, you get the idea.

[Deleted]

Feign Death + Animate Dead. Pretend you die and get reanimated!

Eagle Eye + Blink. Not so short range now, is it?

Call Pet + Heroic Throw. Few things are more humiliating than being severely injured from getting a large animal thrown at you. Especially so if it's a seagull.

[Kaiden1591]

shadow step and killing spree

[Deleted]

shadow step and killing spree

So you're essentially increasing Killing Spree's range from 10 yds to 25 yds, its damage bonus from 20% to 30% and giving yourself a superfluous movement speed increase for 3 sec (2.5 sec of which will most likely be spent inside the Killing Spree)? Well, I can't fault you for staying on course with the ability, at least.

[Shalim]

Blink and Frost Nova.

[Deleted]

Lay on hands + healing rain
Or maybe Bladestorm + divine storm

[evil_bono]

I will go with charge (no cd ofc) + Bladestorm

[Klasis]

Pyroblast+fireball... with fireballs CD >.>

[Direshadow]

Mind Control + Polymorph = Dominance.

Dominate the target's mind, causing them to turn on their allies for 15 seconds. The target will not use any special attacks and attacks 50% slower. 2 minute cooldown.

[AverageJoe42]

Call Pet + Heroic Throw. Few things are more humiliating than being severely injured from getting a large animal thrown at you. Especially so if it's a seagull.

I think a spell combining Vanish and Divine Shield would be great for recovering from raid wipes...

oh wait... R.I.P. Divine Intervention