How to add blood to mercenaries in the game "Holy Chronicle"?

Original version of Holy Chronicle: Drag the medicine bottle to the mercenary icon and click the left button.

The expansion of Magic Phantom: Ctrl+B adds blood to mercenaries with less blood from top to bottom.

The main task of mercenaries (Wilbouchard Favilli Yawhalen) will not die.

When the blood is 0, you will faint and then get up again. ...

But if the mercenary with him dies of poisoning at first, the body will melt. ...

The support of auxiliary tasks is too fragile.

If you really have no choice, exchange blood bottles for runes.