So some people, including me, were a little bit confused on why B!Alm would get a Omni Solo effect on his Falchion, but the answer to this’s as simple as I’m dumb:
Warning: There’re spoilers to FE games
It’s a reference to Wolf Berg, Walharts weapon.
B!Alm is the Alm after the events of SoV, also where he already was the Saint King of Valentia.
And as we know Walhart is the successor or descendant of Alm, so it makes sense that those two have similar or same weapons.
By the way weapons B!Alm and Walhart have basically the same weapon:
Alm has the effectiveness against dragons, cause Falchion.
Alm and Walhart have a stat boost, Alms +3 Atk and Walharts +3 Def.
And lastly the Omni Solo which is the exact same effect, but Alms is +5 instead of +4 cause powercreep.
So all in all really interesting and lovely detail, which my dumbass only saw afterwards smh.