Must have searing sunburst.

You use your bonus action to gather your ki (3 ki) and your attack action to release it.

Ki  beam . FIre a beam from your finger in a 100 foot line, all creatures along line must make a reflexes save for half damage or take martial arts die × 2 + wisdom mod damage, save dc=8+wisdom mod+PB.

Ki cutter . You make a spinning disc of ki and throw it at a target in 60 feet. As a bonus action for next 4 turns you can move it 20 feet and make a melee attack on any enemy in 5 feet . Damage is martial die + wisdom mod.