I totally forgot this was a thing.The last one I made was Brave Lucina (with 2 Drive atk seals) and Brave Bow Takumi. B!Lucina pretty much works well with anybody though are there any other units like that?
What I usually do is bond dancers with the units they tend to dance the most, especially green Azura and flying Olivia, as they add on +3 to all stats as is. For example, on my mixed team, my green Azura has Res Tactic and now Drive Spd and is usually there to help buff up B!Ephraim's defenses and Speed, which is why I had a partner bond made between them.
Pretty much any two units who spend a lot of time around each other, or that you field frequently. For example, I support L!Ike and L'Arachel because she has an Earth Blessing and his Def Tactic allows her to become rather tanky. And I support Nino and Bridal Caeda, because Caeda can buff Nino to high heaven. It will really put in work as long as the units are the same movement type--I've seen the bonus to Spd ensure doubles sometimes--so just ship anyone you field on the same team a lot, pretty much.
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