Complex sentence: Using Puzzle as his pawn, Shift convinces the Narnians that he speaks for Aslan and deceives a majority of them into serving the Calormenes and to cut down Talking Trees for lumber.
Split into simpler sentences: Using Puzzle as his pawn, Shift convinces the Narnians that he speaks for Aslan. Shift deceives many of them into serving the Calormenes and to cut down Talking Trees for lumber.