I'm having trouble thinking of the final addition to a fictional team I'm currently making. What type of character do you think would be a pretty nice addition to the group? They have an original form (what they are normally) and a temporary upgraded form (at the final battle of the story).
1) Kaylene (Leader?)
Original Form: A combat mage who can construct one of 5 distinct melee weapons to be used either handheld or telepathically. Has knowledge of basic elemental spells and at healing minor external injuries.
2) (still no name)
Original Form: A knight-in-training proficient when using a sword, but still competent when using other weapons or without any weapons at all. Can project shield-sized force-fields one at a time.
Upgraded Form: Can project force-fields slightly larger than him. Can infuse held weapon/s with basic elemental magic, but still not capable of elemental magic itself.
Original Form: A ranged assassin from the elf species. Her weapon is a lollipop with a small hole at the top, where magic needles are shot when in combat. A drop of certain chemicals touching the lollipop gives it a different flavor and adds different effects on the magic needles. Mostly uses her legs and feet in close combat.
Upgraded Form: Can also project magic slashes that also have effects depending on the lollipop flavor. The lollipop can now be enlarged to resemble a two-handed mace (minus the spikes), but she can't shoot projectiles when it's in this form.
• Without at least 1 magic gem in your possession (either in the weapon or as an accessory), your magic ability is severely weakened (like the knight-in-training). If you don't plan on using magic, then it's okay.
• If the info helps, the final battle is against an elderly orc mage with an amplified dark version of elemental magic. The battlefield is the same one where orcs and humans battled before Kaylene was born. The orc wants to get revenge on Kaylene's kingdom for wiping out most of the orc species in that one previous war.
Of course, I'm also thinking of something myself, but some help from people with great imaginations would also be appreciated. Also, exams are tomorrow, so I'm still studying. Thank you in advance.
Edit: Forgot to mention that the type of magic used by most mages in this fictional world (from inexperienced to even the most powerful), is classical elemental manipulation. Only a few people in the story have different types of magic: Kaylene's weapon creation, the knight's force field generation, Aya's chemical projectiles, preferably also the fourth one, and a few more.