Review Detail of budhist in I Cheated While Cultivating

the first 20 chapter's hooked me so decided to read the mtl and read upto 270 chapters the reason the novel hooked me was his cheat, but this cheat is used less and less as mc progress. mc can get rewards by killing or defeating people and mc go nuts and fighting and killing evil sect people in one of the earlier chapter it's said that MC's current sect is very suitable for cultivation but mc just leave and fighting around his cheat give him cards that can even take out super beings and each time he kill one powerhouse he get another card so mc don't cherish these cards(these cards that should be used as ace should be rare but mc got one or two all the time) overall after 270 chapter the plot is rins and repeat so I decide to drop it, his cheat made him too op.