NHF – new heroes for Heroes V 3.1.

dwarf specialist: for each dragon in the army, +2% army health; also, for each dragon killed in battle, +1 fire elemental, and +1 for every 4 levels; and at the start, the Summon Elementals spell with an upgraded summon.

Added 36 minutes later
My friend wanted to play the full version, but the link in the header actually leads to version 0.70_only_heroes.