"Whats this do?" Asked the visting Human.
"That," Dugfar replied. "Is my- Wait! Don’t tou-"
...and with that they were buried alive.
The Grand Forge of Karak is known more generally as the Forge of Woe, for none can use it and remain untouched.
In some ways, the Dwarves of Urek were ahead of their time. Masters of metallurgy and alchemy, they had numerous technologies the human kingdoms were unaware of.
If you think the ones with the axes and beards are bad, wait until you stumble across a nest of feral dwarves…
The proud dwarven Captain Dugfar stood atop his mighty machine of magic and stone looking down the mountain they had just emerged from; letting the wind whip his beard over his shoulder… "This is a proud day for the Dwarves!" He bellowed. "...and this is just the start!"
Believable magic, like ordinary physicis, operates according to some invariable laws that always result in some kind of cost or "bounce back". The grater the magic, the more it should cost the character physically, emotionally, and spiritually.