The FD
The FD combines the powers of Ferz and Dabaaba. For example, from e4 this piece can go to d5, f5, f3, d3, e6, g4, e2, or c4.This is a colorbound short-range jumping piece that is fairly close in value to the FIDE Knight, but perhaps a little bit weaker; if it starts the game on f1 (c1, f8, c8), it is definitely as strong as a Knight because its natural developing moves make contact with the center; if it starts on g1, it is weaker because its first move does not touch the center.
The Pawnless endgame of K plus two FD (on different colors) versus King is an easy checkmate; in fact, no help from the K is needed.