Feral Hydra

Feral Hydra is a Greenskins monstrous unit in Total War: Warhammer II. It is only recruitable after a successful Call to WAAAGH!. A furious battlefield force; savage in combat and notoriously difficult to kill.

Description
The Hydra is a titanic beast of the mountains, whose ill-tempered and ravenous nature has proven the doom of many an unsuspecting morsel. Indeed, so ferocious is the Hydra that campaigning armies often make wide detours to avoid intruding on such a beast's bone-strewn lair. Those that march on regardless do so either out of confidence in their battle-prowess or ignorance of the Hydra's savagery. War Hydras are notoriously difficult for their handlers to control, and a Beastmaster must be quick with his lash lest he be devoured in the enemy's stead. They are even more difficult to slay, for not only are their scaly bodies incredibly well armoured, they also regenerate damage at a frightening rate. A foe's only chance is to sever all the monsters heads in quick succession - if even a single one remains, the remainder will swiftly grow back and devour the impudent attacker for his troubles.

Strategy
This unit is stats wise the exact same as the Dark Elves War Hydra except on the Greenskins roster

The War Hydra excels at terrorizing enemy infantry, first incinerating them with its fiery breath, then crushing them with its charge. Although lightly armored for a monster, regeneration and high melee damage make sure few foes can stand against this many-headed glutton. 1-3 of these are never misplaced in any Dark Elf army, just remember to concentrate their attacks on a specific part of the enemy front you want to break and withdraw them to regenerate when they take too much damage. Alternatively, if you have the gold for it, just have an army of these scaly bastards and watch the world burn.