There is not a single Ishgar mage that can even hope to defeat Irene 1 v 1 . The only possible way Erza could win 1 v 1 is if Erza is immune to Irene ' s magic , or is some other kind of absolute counter . <| sep |> Maria ' s Song have the same effect as the Onion Knight ' s BSB . The game description is currently incorrect because OK ' s BSB also gives hastega , so they ' re not quite the same . It ' s pretty relevant for those who could use a native damage buff hastega . Damage buff hastegas are typically ideal to cast immediately when the fight begins . For an effect like OK ' s BSB , it ' s more convenient to put it on someone that can perform well as a healer or support because those roles are impacted the least when slotting in Dr . Mog ' s Teachings or Mako Might in their RM slot . Someone like Celes could probably benefit more from a damage increase RM . I feel Maria ' s Song is best as a secondary layer of buffs to stack with Shout , Sheepsong or other similar damage buff hastegas . That way , there is less need to have it up immediately when it ' s usually more ideal to have your SB start RMs for things like Wall or damage buff hastegas . It depends on your setup . I need more context to help you determine if you should pull . In general , it ' s a bad idea to chase 1 thing on a banner . Are you established enough elsewhere ? Can you build a functional trinity without it ? Do you have enough of other types of SBs ? I don ' t know if you can afford to just risk your mythril because I don ' t know your relic situation . I personally would benefit from having a native OK BSB , but , since my damage buff hastega is typically accessed via RW , I don ' t necessarily need it . I did make some attempts at FFIII banner 1 already , and I already own at least 50 % of the banner , so I ' m not going to risk any more mythril for something that has a low chance of improving my overall collection at this point . I am realistically only going to see duplicates and unwanted relics most of the time . The main things I ' m missing at this point are a healer BSB and perhaps some synergy weapons . Pulling further on FFIII for only OK BSB will not help with that .