An OK map, but it lacks quite a few things.
For one, the Destruction hero is extremely underpowered compared to all the others.
The fact that you used normal wc3 creatures meant that the game had a very unoriginal feel and was extremely easy early on, with your 3000 health hero fighting 300 health creeps.
Even the really high level monsters dont prove much of a challenge.
You used passive ability icons for active abilities (when a BTN is available) and Destruction has an ability called permanent fire with no proper tooltip.
Terrain was rather bland, nothing but flat land with a tree every now and then, and this recurs everywhere, with only small amount of variation (like giant, pixellated volcanoes).
On a good note, the item attachments were nice, but this map would really benefit from an inventory system, however basic, as these attachments stack, and end up looking rather silly
For now I will rate this map 2.5/5.
Fix the issues stated above, and i will gladly give it a 4 or 5.
I wont make an approval vote for now.