I tried to use my mage to do Semidar last night, and it didn't go well. I used my VE Paladin to clear the spawn, which went exactly as you might expect, but given that this character is male he's less than useful against the boss herself. I decided to bring my female mage in there. Granted, this character is far from perfect, and I haven't really played a caster in PvM for ... 15ish years ... so my tactics might be way off. Even using a demon slayer spellbook my spells were doing only ~70ish damage, and she's so friggen fast that even with maxxed FC I just couldn't really get enough off to be useful. My SDI leaves something to be desired, and I'm not quite 120 mage/120 eval, I think - but even assuming that I was at 120 eval (I am 100 scribe) I would do only a few % more damage - if I boosted my SDI up from the 30 or so I'm at now closer to 100 - even there I think my damage per 6th/7th spell would be maybe 120-140ish. I tried EVs, but they 1) only hit for 8-10 damage when they do, and 2) died every 5-10 seconds anyway. This character also has mystic (though only 90). So I thought I'd try RC. They did more damage, but the problem is now I am on foot, and Semidar is about 10% faster than I am on foot. I guess I could try combo's of Sleep + explode + EB... to keep her slowed, and weaken her attacks... Am I just totally missing something? I feel like I'd have basically the exact same problems against Rikktor and Mephitis too. They move too fast to stay ahead to get spells off... and hit too hard to stay close.