HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

Take a relic/artifact with one Hydra on auto-battle.

And has the Hydra been able to take any relic for a long time now?
Maybe I don't know something or I'm not playing the right version?)))

And about quick relic acquisition with a Hydra - there are certain conditions - not every hero can take any relic with a Hydra - certain parameters and skills are required.