Skills for an Inferno hero.

The connection between distraction and artifacts on initial creatures can be observed as follows: the enemy hero moves less frequently, while the creatures move more often, meaning the troops take turns more times before a debuffing/damaging spell is cast on them. Slowing artifacts have a similar effect, but on the demon hero and enemy troops, and vice versa. By the way, considering the demon's knowledge and decent combat stats, you can take a counterspell, effectively trading your hero for the enemy's. This is especially useful if the enemy hero focuses on magic.

And in the late game, you can create very unconventional heroes... When you have a lot of money and a bunch of cool artifacts... A demon mage with two magic skills (which don't require a huge amount of mana) looks quite good :) And if such a demon is wearing "Divine Vengeance" and also has "Sorcery"...