Can you use potions while in battle

Potions cannot be used while in a battle, but elixirs can be. ^^

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Also, welcome to Sylestia, I went ahead and sent you some avatar items as a welcome gift!
The items will show up in your Player Trades. After you accept them, they'll be added to your Inventory.
Click one item at a time, then click the blue Use Item button(If an item isn't selected, it'll be greyed out) to add them to your Wardrobe.

Thank you very much.

You're welcome!

Also, as a little tip, when responding to someone in the forums, either hit the blue @ on the bottom right of their post or type their username in the Ping Users box when typing your forum post out.
Otherwise, the person you're responding to won't receive a notification you replied, and may miss your reply unless they come across it while looking in the forums.

Thank you again LOL

You're welcome. ^-^