Dracotaur Lance ELT strategy bypassing late stages

If you aren't trying to OTKO it, either have an Olive or friend Olive with +2 Shattering Shot and +2 Mortar Beacon. Have some atk/def buffs and atk/mag breaks on team if possible (not necessary).

Turn 1, use shattering shot. Turn 2, defend. After turn 2 for raid boss ends, mortar beacon procs. My 1100 atk Olive does 2.8-3.3M dmg but I have Sparky too. Without the imperil it could still deal at least 50% dmg (just guessing)?

If you can finish off the last 20% or less at that point, you never deal with the late stage attacks!