Can an OL play more than 1 card that states "at the end of your turn" ?

Like playing 2 blood rages.

In my playgroup we thought you couldnt because since it says at the end of the tirn, once you played the first one, the turn inmediately ended.

You can play two "end of turn" cards during the same end of turn. However, you CANNOT do your specific example of 2 blood rages. This is because there is an explicit rule that the overlord cannot trigger two cards with the same name from the same triggering condition. The "end of turn" is a single triggering condition, so only one blood rage can be played. It's the same reason you can't use two "frenzy" cards or two "dash" cards on the same monster during the same activation.

Thank u, its perfectly clear now