Astelon wrote:First a note on Arcanan delayed activations spells. The existence of grenades seems to indicate that it is possible to do, but Arcana is still accepting the deaths of Gifted engineers to do demo work (the one that blew the hole on Fort Salby's walls died from falling debris). That indicates they can't do it in those cases. It might be a limitation on the amount of energy to be released, or maybe a control issue, but in either case it looks as if Arcana doesn't have a concept for bombs. Whether they can develop it is another matter, but it might not even be possible for their technology.
There is a reference in book 2 to "Combat trap spells" (magic landmines) which gives us another datapoint.
From Toralk's PoV
"He didn't know what the Sharonians called the devilish devices they'd buried around their defensive positions. He didn't even know—yet—how they worked, for that matter. But their effectiveness had already been made amply clear, and he expected them to have a significantly dampening effect on the ground troops' confidence.
Maybe not, he thought. I may be being overly pessimistic. It's not that much different from a combat trap spell, after all.
He watched the corpsmen making their quick yet cautious way towards the newest casualties and knew that there was, indeed, at least one very significant difference. The devices killing his men as they exploded were completely undetectable by any of the Army's trap-sweeping spells. They simply didn't register, since they didn't rely on any arcane technology at all, and that was the reason for the hesitancy he could already see in the gas-masked troops advancing cautiously through the Sharonian positions."