u/Extension-Jeweler-58

Hello guys, im playing op15 Krieg deck (in french) but i dont understand one of the carte activate main The op15-008 big krieg say : "if was played on this turn" So it work only one turn? The only turn when i put him on the field? Or it work everytime i rest him After an attack?

Its kinda confusing, because if its only one Time why its an activate main / once per turn

But the "played on this turn/joué ce tour" is weird to me.

Sorry if m'y question have no sense for you