15m blm have to be Mana Fromt. just like FFxi 2h ability and brust made it like a 1500mp cost spells on 2-3mins recast coo mana fromt have sense of use same as other AMs as Tornado or Flood or Quake soo yes i think they have to changed and adress it now erly to be unlimit mp for 30seg or 45.... time to cast a full thunder->1-2-3+ brust spell and have mp full still to continue on full attack mode and also new spells add on lv51+ like blizaga will have high mp cost