Your post is confusing. If you intentionally put in the weakness, then how do you not know what it is? If you don't know what it is, how do you know there is a weakness?
That being said, you cant cast druid spells while wearing that metal half plate. Your also not proficient with either it, or that dragonhide fullplate in your pack.
Somebody guided me through the making process and helped me make it but there is a glaring flaw in it, a sort of killswitch to allow him to kill me if I get some awesome loot etc.
Huh? Why does somebody help you just to have the option to kill you on a whim?
Anyway, ignoring the mistakes that where already mentioned, I don't see anything wrong with your character. There is no guaranteed-to-kill weakness in there. Unless the one wanting to kill you is the GM and just tells you you are struck by lighning for 100d20 damage.
You're missing your +2 to Know (nature) and Survival from Nature Sense.
Metal armor you're not allowed to wear without losing spells and that you're not proficient in. It's Armor Check Penalty isn't included in your Swim or Climb.
You know Druidic, but it's not written down.
10gp is monthly spending for an average lifestyle for a month. Your cloak and hat costing 10gp each is a bit out there. In relation to my own lifestyle, it means your hat and cloak are priced at about $150 each. So, maybe closer to 10 silver.
As a sidenote, yeah, cast Barkskin instead of drinking a potion.
Potion - 10 minutes, +2.
You - 50 minutes, +3.
It's better.
Somebody guided me through the making process and helped me make it but there is a glaring flaw in it, a sort of killswitch to allow him to kill me if I get some awesome loot etc.Huh? Why does somebody help you just to have the option to kill you on a whim?
I apologize, I meant to say that in the first place and by the time I could log back in I couldn't edit it. If you haven't gotten past the 500s or so in Order of the Stick, you may not want to read that yet.
it is worth noting that no class has a "would you kindly" style killswitch.
That being said, you have no ranks in handle animal. This will be needed so as to best use your pet. But it looks like you chose a domain. Anyhow, get Handle Animal anyway. It works on summons too.
I also can tell that you put weight in kilograms technically you wrote kiloGRAM/pounds (kGlb), but height is being listed, not in meters, but as one foot, eight inches, about 50 cm.
oh, and you can change whitch spells you prepare at the begining of each day. Go ahead and use barkskin when you need it.
Some of my favorites are: Entangle, Produce Flame, Call Lightning
Unless he's playing a mounted barbarian, I don't see any obviously notable kill switches in your druid.
If he is playing a mounted barbarian, then he already has a kill switch for every character in the game so your character isn't alone in this.
ALERT: YOU HAVE NO WEAPON! maybe you should purchase one.
Clubs cost nothing, being unarmed could cost everything.