- Gnoll (Level 2, Stun, Double Strike, Chaos or Might)
- Manticore (Level 3-4, Poison, Paralysis for several turns, Chaos or Death)
- Chimera (Level 4, Flyer, Fear, Terror, Poison, OP, Death)
- Basilisk (Level 3-4, Petrification, Might)
- Lizardman (Level 1-2, Ranged attacker, no penalty in melee, Chaos)
Gnoll - what's wrong with Squires? I don't see the point of having a second creature with a club.
Manticore - what is Paralysis? There is no such effect in the 4th game.
Chimera - okay, it's fine, but without poison - otherwise, it's illogical to have both Fear and Poison.
Basilisk - it's okay, but why Might race? Petrification? Are there not enough Thunderbirds? Petrification is too powerful an ability to give to a Level 3-4 creature, even if Medusas die quickly, this one will be hard to kill - it will destroy armies.
Lizardman of Chaos, but what's wrong with Orcs?
Added 27 minutes ago
There is an unused spell in the game called Sparks, so my ideas relate to this spell.
Fire Serpent - attacks with Sparks, Sorcerer (fire aura, Haste (Chaos), Cat's Reflexes, Fire Shield), 25 mana, fire resistance, Level 3 Chaos. In melee, it attacks with the Sparks spell, without spending mana.
Artifact - Sparkling Wand - the hero wearing the artifact attacks, and the attack is accompanied by the Sparks spell (50 * hero's Chaos magic effectiveness + 10 * hero's level), the artifact adds +10% to the hero's Chaos magic effectiveness for each level of the Chaos Magic skill, if the skill is absent, the effect is absent.
New non-magical skill - Luck of the Road (increases the amount of resources collected on the map by 10, 20, 40, 70, 100% depending on the skill level), Golden Watch (increases weekly income from controlled gold mines by 5, 10, 15, 20, 25% depending on the skill level), Resource Watch (increases weekly income from resource mines by 5, 10, 15, 20, 25% depending on the skill level). Additional skill - Master Builder (a hero with this skill can upgrade mines to levels 2, 3, 4, 5 up to level 4, at level 5, the hero can upgrade a Town Hall to a Capitol in each of his cities for 20,000 gold, which will generate 4,000 gold per day, if the city is lost, the Capitol turns into a Town Hall, each level of the mine increases income by 100% (+1000 gold for gold, +2 wood/ore, +1 other resources, if the mine is lost, the upgrade disappears, the cost of the upgrade = the cost of building the mine from the vein * the level)