If you are able, consider morphing to a Lupe/Lenny as they both have incredibly species exclusive freezers/healers.
Otherwise, go ahead and get some scarab rings if you are especially new, as they pack quite a punch for a very very cheap price.
Leaf shield is a big plus too, as well as Downsize!, since they are both classics and still very useful in the BD for defending.
If you want a healer, consider a scorchstone, or like the above poster said, a lesser/greater healing scroll depending on your pet's HP.
If you can shell out more cash, consider going to in depth battlepedia and looking at various 9 iconers, such as the aforementioned Stone club, Ice club, and even things like Psellia's Fighting Fan, Pike Pike, and Essence of Esophagor.
NOTE: Do not get all of the aforementioned things, just pick some that you prefer/like as based on your preferences. Look up guides as to how to beat Defenders of Neopia as they show you which opponents carry which weapons which deal X amounts of icons, and what type of icons they deal, and their shields and healers.
Good luck with your set Xwee!