It is pretty simple, really : I have 3 curios that gove +20% chances to get a curio instead of a weapon as a reward from the emperor, and after 25+ missions with them, i only got 2 curios in total
Si, i might just be incredibly unlucky here, but assuming curio chances are 5~10% base, +60% should get me a bit more than 2 over the course of 25 missions