Tried both ragnarok already. Apocalypse ragnarok is pretty straightforward, her overdrive hits for around 1700 on everyone and attempts to blind. Rage overdrive hits 2 characters randomly for about 4500. Much easier than Ixion was. Phoenix is potentially even worse than ixion though. Neither overdrive of hers does dmg. Her normal gives her a large defense buff and 50k hp regen for 5 minutes. Rage is a large attack buff and she heals based on her attack damage. She hits my dark characters for close to 3k before getting attack buffed and about 5k after attack buff. She's pretty vulnerable to debuffs at least so Balor helps quite a bit, but I'd suggest bringing ways to dispel her buffs.