Favorite hero from Dungeon.

I understand that with Letos, you need to focus on education. And you shouldn't neglect Chaos either, right? After all, you need to use the hero's high-level spells. So, Darkness, Education, Chaos, and Spell Power. Which skill should be taken as the fifth, if, for example, the game is long, up to level 23? I want both attack and luck (a lucky spellcaster), and logistics (keen mind). I think Letos is strong, but it seems like he either ends up with no attack, or no luck, or no Chaos (and then there's no need to develop the Arcane Wave skill, and Irresistible Magic becomes an empty, unnecessary skill). And if he casts lower-level Darkness spells, then Spell Power won't work for some time during the battle. I just can't come up with a good build for Letos; I can't find a harmonious one; I always have to sacrifice something. I agree that leveling up with him is faster, but other Warlocks also level up quite quickly. My version: Iranna, Education, Chaos, Spell Power, Lucky Charm, Attack.