Velshard Shackles

A Mage's Bane
Velshard Shackles stop a magic user from casting magic of level 4 or lower. Those who would wish to cast while wearing the shackles must make a DC 23 spell casting ability modifier check. Those who roll higher than the DC can cast the attempted spells. Following spells still require the DC to be beaten to cast. A roll that fails to beat the DC uses the spell slot.

Spells casted with a spell slot above 4th level gain a cumulative +2 to the roll per increased spell slot level as well as advantage on the roll.

Ex: 5th level spell slot: +2, 6th level spell slot: +4, etc.

The shackles chain can be broken with a DC 25 Strength check. The shackles can be lock picked with a DC 20 Dexterity check using thieves tools. The shackles can be escaped with a DC 20 Dexterity check after attempting to wiggle out of them for 10 minutes, the check is made after the 10 minutes.

Velshard shackles are almost always only found in use by the Malorum Mage-Hunters, a group of highly-trained warriors who hunt those who use magic. Finding someone outside the kingdom to sell you one is near-impossible, finding someone inside Malorum to sell them is easier, but will most likely require either close-friendship to the Mage-Hunters or a trip to a seedier vendor in a blackmarket.

Velshard Shackles share their name with the material they are made of: Velshard.