Ilmirn All Hydras lost in battle (Cave Hydras, Acid Hydras) will be instantly returned to the Dungeon cities as increased reinforcements, provided the necessary structures are built. NHF_Ilmirn_percent = 2; --The number of Hydras that grow in the castle after one is lost in battle by a hero. Hydra multiplication is noticeable: Hydras appear immediately after being lost, with a ratio of 2 appearing for every 1 killed. This is in addition to the reinforcement bonus. The effect is a large number of Hydras. The main point of this post is that a 1/1 ratio is quite good, almost like a Necromancer.