ryublaze
Noob
Requires a stage with a Background Bounce. Robin can use bgb to set up both low trait and smart birdarang so that he can block wake-up attacks and cover regular/short/long delay. If birdarang is blocked or if they delay, you get a free 50/50 between f21 and trait. The low trait combo lasts long enough so that Robin's trait recharges just in time to set it down again.
How to set up:
End any combo with bgb -> db4b -> db1
Overhead combo: (with trait already set)
f21 db2 MB b3 j3 f2 bgb dash db1 dash
Low combo:
4 b2 db2 MB b3 walk forward 12 bgb db4b db1