Build advice for Lone Druid

Al right guys I am just wondering about this build; I sore a lone druid player get Daedalus on his spirit bear and I'm wondering is that a good or bad item to get on the spirit bear? wouldn't Mkb be better on the spirit bear?

Daedalus is a very good item to get on the bear. The crit works perfectly, and it's the best item to get if you just want your bear to do more damage. Daedalus will always do more damage than Monkey King Bar. You get MKB because you want the utility : you only get MKB because you want to avoid evasion and miss chances, or because you want to break channeling abilities like TP scrolls or Pugna's ult. Lone druid doesn't need the minibash because he has the entangle and Skull Basher for that already.

Get MKB if the enemies have evasion like PA or miss chances like Troll/Brewmaster/KOTL/Riki/etc, get daedalus otherwise. Daedalus is a better damage item, MKB is a better utility item.

Daedalus is probably one of the last items you would be getting on the bear. The money would be better spent on a Skull basher and a speed items like Maelstrom. Since the bear doesn't hit that fast.

Also an AC on LD would be nice too.

This. You get damage items later, first you get mealstrom or radiance, depending on the timing that you want to hit or the amount of farm you are getting.
Usually after this you want cuirass followed by basher or MKB if needed, after the eventual basher you can get deadalus.

Great thanks for the advice :)

Usually Maelstrom. Since most of the time; you won't be able to get free farm for radiance.