impossibru whit the damage reduction if NSD is too fast E.G. 10 hits per second will have 80% less damage output and the fact that B3F is recomended for Lv.190 players whit the best gear possible like how a Mithril Greatsword+15 could reach 100% CD and 880 attack and CR or SSA on 3rd slot or if you want to be smart 3 Slot CD and the dificuilty of that dungeon:High/HP/Regen/DEF. DC and patched AOE