1. if a weapon compund same type of N card (lets say hell wind), will it increase chance to cast as X N?
2. will adding it to elem sword, making autocast even more frequent?
is there a who override who promlem here?
I don't think the chances will increase if you compounded the same card on the weapon. Based on description, the % of autocast increases based on level of refinement, not based on the number of card that you compounded. It doesn't work like Soheon or any other increase damage card that the effects can be stacked.