NHF – new heroes for Heroes V 3.1.

Inferno:
Urrg

Advanced Gate opening
Fundamentals of Chaos Magic
Fireball
Specialization: Lord of the Abyss: Cave demons, lords, and imps gain +1 to attack for each level of the hero. Additionally, they gain +1 mana for every 2 levels of the hero (imps gain +1 damage for every 3 levels of the hero).

Tarot

Fundamentals of Sorcery
Soul Eater
Army of Imps
Mistress of Imps: Imps, devils, and implings gain +1 to attack and defense for each level of the hero, starting from the first. Additionally, they steal 1% more mana for each level of the hero.