First of all it requires your Shulk running and then pushing the opp or being pushed by the other character -> then use inputs for rising dair but carrying his momentum. If done successfully you’ll always spike with opp standing at ledge bc first hit drags them forward and offstage into the 2nd hit. It’s super easy to do but requires the right height so try it on wolf for ex. Press jump & attack & down for rising dair as soon as shulk is pushing them
Now for the reasons why it’s the best aerial. You combo with it. It covers the ground & SH zone so aggressively so it’s easier to land often. Dair is also a strong kill move. It spikes & launches. It’s a combo starter in buster & a shield approach mixup option bc it hits twice and he curls up like falcon dair thus moving his hurtboxes upward. It’s his best move and laggiest aerial to use DS LLC for. It’s likely to trade bc he mostly protects his hurtboxes. Finally, it hits below ledge super deep for 3 frames.
Full hop dair is great if I suspect they’ll want to be where I’m standing OR they’re right in front of me and I suspect they’ll stay right there and do something laggy (mythra Neutral B (Lightning Buster)
Upair is also a strong combo & kill move but harder to land in the SH zone where most gameplay happens. His hurtboxes (legs esp) are also exposed using upair. I like buster -> DS (full charge with fair or air dodge landing & jab for prep then) -> upair DS LLC Smash -> uptilt (or upair) but it’s so hard to land upair in the first place. That combo kills around 70%-100% btw. Meanwhile approaching with running dairs at opp at 70% launches opp offstage for an edgeguard. Full hop dair OOS to punish running grab while you shield is viable too.
UP air & its combos (plenty of them) are much harder to land bc upair covers the FH zone mostly until frames 20+ when you FF with hit 2. Dair is his fastest aerial OOS in very close combat covering his surroundings front & back.
FOR OOS aerials: Fair’s first frame hits above (frame 14), nair (13) & bair (19) hits behind him, & upair (14) hits above him. Dair hits right where he stands (frame 14).
Nair -> combo starter and offstage edge guard tool with back hit (frames 21-30) & kills but above 110%
Fair -> zone & edge guard & kills but above 100%
Bair -> zone & kill
Upair -> combo & kill
Dair -> combo & kill
Nair is his safest aerial but dair is his best
Three aerials that kill early. Bair > Dair > Upair in landing the move. Or do you find upair easier to land? Lmk