what make vulnerable and scourge?

what make vulnerable and scourge?

-3 Toughness +3 damage.

so the ability of monk of Yllia that give scourge and vulnerable give to the enemy unity - 3 thoug and +3 damage?

The Guardian of the Runes' first spell increases damage dealt and received.

Better used on a unit that's not expecting a riposte (like when attacking an archer).

so the ability of monk of Yllia that give scourge and vulnerable give to the enemy unity - 3 thoug and +3 damage?

you cannot give it to an enemy. I add that the grave guardian + rune priest are a nice pair as the first one is less likely to be hit.