Is Maria good or usefull these days, got one from the 10 plus 1 ticket
Marie is really useful once her enhancements hit this week (I think). Her Love You All gets a 5-turn heal added to her elemental resistance equal to 2,000HP+SPR*1.5 heal; per turn heal for 5 turns to entire party.
What's great about this is that it frees Marie up from healing/elemenal resistance duties. Meaning that she has a good 4 more turns before you needs to cast Love You All again. In between those turns she can cast her Loverly Guard which, enhanced, does full status resistance and has comes with Protectga/Shellga(+40% DEF/SPR) built-on, or reflect on your tank. Her spare turns also make her ideal for abilities like Bushido Freedom.
But with Rikku's and 9S's TM, you can also boost LB, debuff enemy stats, or cast that -40% damage reduction to your allies with those spare turns. And between elemental resistance, status-resistance, DEF/SPR boost, and 9S's -40% damage reduction; that Love You All healing output goes a long way.
Her anti-element, which is a -40% Imperil, is also increasingly useful, especially as we've recently been getting multi-element units (like Lunera, Bran), multi-element chainer setups, and have gotten units that don't have built-in Imperil; such as A2, 2B (except for lighting, but not of first turn), and Onion Knight.
What's great about Marie is that she fills a ton of support roles by herself; especially with 9S & Rikku's TM. And she does a lot of things, full elemental resistance, all elemental imperil, and status resistance, better than any other unit in this game.