The Archmage has the normal Water Elemental spell text, it doesn't mention that he summons 3 Water Elementals.
In the human Arcane Sanctum, both the Hydromancer and the rally point use the Y hotkey, so if you press Y it selects the rally point.
Also the Chaplain Adept training and Master training use the C hotkey, which the Chaplain also uses.
The Water Elemental spell the Hydromancer has says it has 550 hp and 28-37 damage, while the Water Elemental actually has 500 hp and 19-23 damage.
Mana Scroll on Rhonin can be leveled up to level 3 while he is level 4.
When you turn New Dalaran's Arcanists into siege mode, you can remake Arcanist's until you have 12 spellcaster mode again, and that can be done infinitely.
Considering the unit limit on other siege units I'd thought I'd mention it.
Conjurer's Dalaran Ward ability says it uses Strength of the Wild and Reinforced Hides, not sure whether it's supposed to have New Dalaran upgrades or no upgrades at all.
When you click on/use the hotkey for Summon Lightning Elemental on Conjurer, it automatically actives Dalaran Ward, and the same happens when you activate Dalaran Ward, even when the spell you click on is on cooldown it activates the other.
Slow Time of the Kirin Tor Agent's card text says terget instead of target.
I do really enjoy the map, I find it fun to go through the units in single player and see what they do, hope it doesn't come of negatively that I'm just listing bugs/card text errors
(Edit) Stormwind's caster building(Church) has the E hotkey, same as with the Lumber Mill.
Command Aura can be leveled to level 2 when the hero hits level 2, and to level 3 when the hero hits level 4.
Varian's Roar also is the same, think it may be for all custom spells, would have to test to make sure though