Magicae, the Tele-magus
First off: I'm terrible with numbers (scalings/base damage and what-not) so I apologize that this is very vague.
http://vignette3.wikia.nocookie.net/elderscrolls/images/6/63/Mage_Robes_Male_2.jpg/revision/latest?cb=20131112231033 Here's a picture of something he could look like. This is actually a mage from Skyrim so I apologize for that.
Passive: Portal Shift When Magicae uses a spell, he gains a stack of Portal Shift. Once at 6 stacks, Magicae enters a state in which his spells cost 25% less and their cooldown is reduced by 50% (applied before CDR). There is a 30 second cooldown before Magicae can enter this state again.
**Q: Arcane Blade **(6 second cooldown) Magicae sends a magic knife through a portal. This skillshot fires backwards and deals AP scaling magic damage in a line.
W: Rift (10 second cooldown) Opens up a portal on the ground which suppresses enemies for 1 second when they enter the area. After they have been suppressed, they are heavily slowed for 3 seconds.
E: Teleport (20 second cooldown) Magicae teleports a short distance and his next basic spell deals 150% damage.
R: Deathspawn (60 second cooldown) After a 1 second delay, Magicae summons a Deathspawn for 30 seconds. This creature moves quickly and deals AP scaling magic damage auto attacks. Deathspawn knocks up surrounding enemies every 3 seconds. It can be controlled by clicking R or Alt-clicking.