Rules: I know that's annoying fact, but you should remove most of your imports: icons and skin at one hundred percentes. I see no use for Hero Glow model either. That's not my opinion or task, but that's a rule of the spell section. Also Credits should be included into the map also, at least in trigger editor.
Second is
Misc map features. Firstly, the message with "Helpful testing Keys" was removed rather quickly - I didn't even pay attention to it. Then, add a sound set to the hero. Testing map is very good - it has destructiblies, cliffs and water.
About
Hero & Skills: All of the spells are AoE damage... don't you feel that's a bit imbalanced? Well... not a bit... Too much?!
Triggering: Knockback spell is rather simple, that's particulary a copy of Paladon's testing spell.
About "Terra Ward":
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Set TerraWard_location = (Position of (Triggering unit))
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Set tempoint = (Position of (Triggering unit))
Why two times the same point into two different variables?
You should avoid using Integer A, cause it can cause bugs rarely.
And the last point about this spell: Can't you make it w/o three different If/Then/Elses, but using calculations with (Level of (Ability being cast))?
Let's move on, next trigger is "Earthshatter":
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Set tempgroup = (Units within 250.00 of tempoint matching ((((Matching unit) is Building) equal to False) etc...
- You should want to add a filter with "Mechanic" and "Magic Immune" units.
Does this thing now work as "set bj_wantDestroyGroup = true"? I didn't know that.
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Custom script: call DestroyGroup ( GetLastCreatedGroup() )
And the Nature's Wrath is a copy of the spell from a "Nova Spellpack", isn't it?
Let's conclude: Two spells aren't done by you; many HW rule violations; coding is okay, decent description; no information on import/customisation/custom text accompaniyng the triggers; some minor minuses... Let's say, this is "Lacking" until you fix most of the mentioned above.