Terrorize is decent status and not often immuned. It's just *slow* off of Bowser which can be a problem. Your team is more about setting up followed by beatdowns though.
Does anyone know how good Sharanda's damage really IS with items?
Early on, Shana using items is the most damaging thing you've got. There's like, three "tiers" of items. Single-target, weak multi-target, and strong multi-target. The ST items are stronger than the weak MT items, and the strong MT items are about on par with the ST items. The ST items and the weak MT items are all store-bought throughout the game, whereas the stronger MT items are never store-bought.
On the earlier floors (Floor 1-3), I'd peg ST items as doing as much as 0.6 PCHP, with the weak MT items probably closer to 0.45~ or so. As you progress, and you start leveling up your additions, items start to give way to additions in terms of damage. Later on, when Albert, Rose and Haschel start really dishing out big damage with their additions (Floor 4-5), ST items probably drop back down to the 0.4~ damage range, and maybe more like 0.3~ with the weak MT items. By Floor 5, you start having access to the strong MT items, so the MT damage becomes closer to the ST damage.
I don't know if Sharanda still has Psyche Bomb X (if she goes, it would be on Floor 6), but when she gets that, it's probably like, MT 0.7~ PCHP in damage. It's really strong. Actually, if I was to make a list of when items become store-bought, I think it'd look like this.
Floor 1 - Healing Potion (ST, 50% healing), Angel's Prayer (ST, 50% revival), Body Purifier (ST, heals physical status), Mind Purifier (ST, heals mental status), Burnout (ST Fire item), Spark Net (ST Thunder item), Spear Frost (ST Water item), Meteor Fall (MT Earth item), Dancing Ray (MT Light item)
Floor 2 - Sun Rhapsody (ST, full MP healing), Dark Mist (ST Darkness item), Fatal Blizzard (MT Water item), Spinning Gale (ST Wind item), Gushing Magma (MT Fire item), Thunderbolt (MT Thunder item)
Floor 3 - Healing Breeze (MT, 50% healing), Pellet (ST Earth item), Trans Light (ST Light item), Black Rain (MT Darkness item), Rave Twister (MT Wind item)
Floor 4 - Healing Fog (ST, 100% healing), Depetrifier (ST Petrify healing),
Floor 5 - Panic Bell (ST, Confusion), Stunning Hammer (ST, Paralysis), Poison Needle (ST, Poison), Midnight Terror (ST, Fear)
Floor 6 - Psyche Bomb X
Healing Rains (MT, 100% healing) and Spirit Potions (100 SP added) are never store-bought.