OMG!!!! these ideas are amazing!!! +rep FUSHURE, i will post the ideas that i will use in a minute
Edit: These are the spells that made it to the map
1)
Dead rising
By tapping the very source of his evil power the hero is capable of infusing undeath into many corpses nearby and morphing their remains into hideous monstrosities of unimaginable death brining capabilities. Unfortunatly the magic is highly unstable meaning their duration is limated and semi random.
Level 1 it can animate atmost 3 corpses with a 80% chance to become skeltons and a 20% chance to become zombies.
Level 2 it can animate atmost 4 corpses with a 60% chance to become skeltons, a 30% chance to become zombies and 10% chance to become gouls.
Level 3 it can animate atmost 5 corpses with a 40% chance to become skeltons, a 40% chance to become zombies, 15% chance to become gouls and a 5% chance to become an abomination.
Level 4 it can animate atmost 5 corpses with a 10% chance to become skeltons, a 50% chance to become zombies, 25% chance to become gouls and a 15% chance to become an abomination.
Level 5 it can animate atmost 5 corpses with a 40% chance to become zombies, 35% chance to become gouls and a 25% chance to become an abomination.
Statistics of summons vary with hero stats (like int or levels) and the strength of the base is dependant on quality (skeltons are weakest with abominations strongest). Duration should be aproximatly 60 seconds odd and is decreased randomly for each unit based on the number of units animated (penalty should decrease at higher spell levels).
2)
Death Defying Scream (active) - Causes all enemy units within xx AoE to run away from the hero, also lessening their armor by xx and damaging them by xx every second. (Lasts xx seconds)
all the xx are modified by the lvl of the ability
3)
Chain Of Nether, Active, Unit Target
The Dark Magicican casts a chain of nether on target causing a small impact with damage and leaves a strong dot after it, bounces to the next unit for x times.
Bounce times, casting range and damage increases by level.
4)
Vampiric Rage. A spell with its target as a friendly undead unit, which works only at night. It enables the target unit to drain life from its victims, also, if the victim dies after being bitten by vampiric-raged unit recently, it turns into a special vampire-like unit.
5)
Black Implosion, ultimate, aoe, channeling
An dark implosion is created above the magician, causing all units in X range to take damage several times. The longer the magician channels the stronger the implosion gets and the X range will grow stronger to Y range. Also it will have a Z chance to lift up a unit in the air, friend or foe, then striking it into the ground causing another smaller implosion at the units current position for A seconds.
Maximum 3 implosions can be active at the same time, maximum 6 seconds channeling time.
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Sorry for the peoples ideas that i did not use, but i +reped you all for the help 
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If anyone is able to create Black Implosion, i will rep and give credit 