Chapter 982 The Impossible Stronghold (4)

'Thunderbird Strike.'

Holding his staff aloft, Marcus cast a tier four lightning magic spell. His mana turning into electricity and shaping itself into the form of a giant majestic bird.

It had been quite some time since he last cast this spell, but it was familiar and packed a great amount of power within it.

'Go!'

Marcus swung his staff down and launched his spell at the looming robot that wielded two superheated swords that could easily cut through his iron magic.

Nevertheless, Marcus felt certain that the unique properties of its swords would be ineffective against lightning magic.

And as if to prove him right, the larger, more heavily armored robot did not try to cut through the spell and instead erected a powerful barrier around itself. 

When the spell connected Marcus focused its power on the robot and kept it from exploding as it normally would.