>>535006989
Gnosis freeze downs Skimming Sea Drifters, so he's a reliable counter to them off that voucher. Mayer is also a good pick for that use off Supporter voucher, hell a pretty good starter too with another helper, but unless really needing it I wouldn't pick her mid run. He can also counter ED1 and ED2 bosses very well, in S3 in general CC like his is strong, and Freeze reduces RES so he makes Arts better. Medicmiya S2 has True Damage so she ignores the RES. Pure healers are still useful but mostly their extra utility. Quercus sanctuary and eyja2 HP buff specially on S3 cut off lots of one shots like Izumik or combos from a big hit `+ corrosion/nervous impairment proc common in IS3. Though Nightingale is usually better if going F6 for ED3/ED4 to counter both bosses with baits and RES buff, and handle Pompeii stage.