Why not 1. Nbb5# 1-0 ? Or does the Samurai not have 'Lion power' (i.e. can continue after capture)?
In Mighty-Lion Chess the Knight in the g-file can make two King moves per turn, with Lion power. So it can make double captures and hit-and-run captures. (It can also make the two steps as a jump.) This already makes it worth Queen + Rook. Two Knight jumps would even be stronger.
the piece currently known as "knight" or "hoarse" is now a samurai warrior. Since samurais are freaking fast, the samurai moves TWICE per turn!