Lord Tang ultimately chose Consuming Crystal.
Sitting in the chair, he watched the progress bar go from 20%, to 40%, to 60%, to 80%... Fortunately, there were no infuriating instances of it getting stuck at 99% or 99.5%.
"Ding! Derivation progress reaches 100%, second-tier large spell 'Endless Thunderbolt' developed, construction price 80,000 Source Crystals."
Tang Yu breathed a sigh of relief.
After investing nearly three million Source Crystals, if it had not panned out, he thought he would have cried himself to death. If he hadn't just happened to sell a large batch of equipment to Beiting, he wouldn't have been able to produce several million liquid Source Crystals.
He looked at the newly formed spell icon.
The 'Destructive Thunderbolt' was a blue-violet lightning icon, and the 'Endless Thunderbolt' was represented by several lightning icons overlapping each other.
The spell description read, 'Continuously release destructive thundebolts over a certain area.'
