I would say honedge to B- at most, And even then
The poke is like celestavian stated slow and no means of recovery, thanks to the ability easier to ware down, so even tho it's natural stats it still lacks to be called defencive. The offencive side isn't too bad having Ghost, Steel stabs + even ghost priority but. as for filler moves sacred sword(idk why you did run that), SD what is basicaly the best for it and Rockslide what it could make good use of.
I have been looking trough honedge at one point trying to even make a team with it, it juts happened to be the most akward poke to core something with :/
it either lacked defencively or offencively and neede a set up chance what it did get actualy in the 1 battle i played it. even in that it didn't do mutch the guy just blocked it with larvesta ( curse the no rockslide), and well..... .
Your probobly face: priority, strong ghost stab or rockslide cover as main problem to invest the attack slot's into knowing iron head is standert.
i would say let it stay C+
magby however i would say B- and to a stretch B, but the reason behind this is because it's 2 utility's being LO(never faced one), and belly drum (losing to 1 once but having faced it like 3-4 times).
One of it's problems imo is not having stronger priority like sucker punch. Mach punch is good tho reguardless but just lacks picking up the last bit.
Another beign too low defences to work on it self with belly drum, but it can still pull it off with memento support or with just the right opponant. to specify what i mean by this:
it's main niche that i see is it properly being able to steamroll trough allot of teams witout needed that mutch support, yes zigzagoon exists and saying oh yea it's immune to burn as if that was the most important point.
It's imminity to burn is little but not the biggest.
-Able to set up against pokes like foongus, pumpkaboo, larvesta and ponyta and sutch what is the compleat opposit of what zigzoon wants to set up on.
-needed properly less support then you might think, i mean yes zigzagoon un-doutably is better overall, but being able to deal with pokes like that, what honestly i did bring this subject up again After the diglett suspect, knowing after that zigzagoon teams will struggle loads knowing one of the best partners/helpers to take care of it's weaknesses is gone.
-As merrit stated, Coverage, i forgot to even put that one on it, yes it does have issues with coverage but it still has a pretty good work out with this: Return over all is the most common/best cover, return allows you to deal with chinchou, speed tie with staryu and generaly allot more.
Teambuilding with magby usualy ends up with belly drum teams as far as i have seen it but it can be used in mutch more then just that actualy, it can with just cottonee set up against allot of pokes and sweep most teams(again maby can set up naturaly on things like larvesta,ponyta,foongus and sutch who are the best answeres to cottonee aswell) , sometimes it can get pressure allone with Fire punch+ 17 attack + 19 speed while running the belly drum set(but then again ponyta would do preciesly the same...)
As for the LO set... not too mutch use overall knowing ponyta could do most of that already :/
all by all mon i would say is worth B-, once diglett is gone... to B no hesitation P_P