Why does it say both "b'Shogeg" and "bi'Vli Da'as"?
Malbim citing Makos 6b: B'Shogeg excludes Mezid. "Bi'Vli Da'as" excludes one who intended. 1
Makos 6b: Some say that 'Mezid' is [close to Mezid, i.e.] Omer Mutar (he thought that murder is permitted), 'one who intended' intended to kill an animal, a Nochri or a Nefel, and he killed a viable Yisrael.