When the Giant War Tortoises released their powers, their shells opened and energy beams were released within the vicinity. The surrounding area was utterly destroyed, leaving nothing in its wake. But through the dust and smoke, the Blade Mages appeared swiftly to send slashes and pierces of energy into the crevices of the Giant War Tortoises' Shells.
If that was not sufficient to inflict damage onto it, a few of them relied on the speed and momentum of their 5DM Gear to temporarily surpass the limits of the sound barrier and stabbed through their shells. Along with that was the transfer of magical power from their body, into their blades and eventually into the War Giant Tortoises. Of course, that so called transfer was not a smooth relaxing process. The violent burst of magic combined with the aid of the anti Celestial compound had caused the toughest of shells to crack.