let me share mine… i rerolled to a cryo3, ele3, sorc2. just me on single target but godly on clearing a room in a dungeon… i use my mount to lure… suprisingly i can lure that much… usually nether… then skill 2 of nether dismount, use frost pillar then frost cloud, and hail… if any lefy i use electrocute… im 100 con invested the rest spr. my cards are x3 link roller + spi, x3 hydra %dmg against frozen and x3 merregina + ice property atk. ive yet to select my blue cards… all my skills have added attribute dmg lvl 50 dont got enough money yet… i like my build and im staying it this way for the weapon just get the latest and with stat bonus mostly for spi, also for gear stack as much spi as you can… and armor… mdef is already covered by spi… im waiting for the frost lord card as my main summon someday.
feel free to use this as reference…