upthrow upb sideb OR downthrow nair regrab upthrow upb sideb catch roll from ledge with upsmash or fsmash edgeguard with fair or bair dtlit upair for kill confirms or just raw bair/fsmash/upsmash at higher percents, upb sideb/aerials can kill, earlier off platforms. neutral b is underrated imo. use it similar to a charge shot (but you cant release it early) but dont let it charge past uncancellable points. the arrow itself can get some lucky snipes but using the charging animation itself as conditioning/baits is better. byleth's movement is trash so use your ranged options more and juggle with upair. against campers and pikachu, l+r+a+start -> switch to another character is your best move.