Casting Time: 1 action

Range: Self (10ft radius)

Components: V, S

Duration: 1 minute

Throwing the purple energy at your feet creating a runic circle of 10ft radius around you.  Within the cirlce enemy creatures have disadvantage on attacks against you and have their speed reduced by 10ft.  Additionally, enemy creatures must make a Wis saving throw.  On a fail the creature loses resistances and immunities become resistances, on a success nothing happens.

 The Yrden sign is a simple magical sign used by witchers. It forms a magical trap on the ground that triggers a limited number of times when traversed by a foe causing knock back, damage, and a chance of inflicting status ailments. "Cast this Sign and a circle of Yrden symbols appears around Geralt. Most foes that wander into that ring are significantly slowed, though some monsters are unaffected by it.