Tartarean Tomb

7th-level conjuration (Sorcerer,Warlock,Wizard)

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• Casting Time: 1 action
• Range: 70 feet
• Components: V, S, M (iron shackles)
• Duration: Concentration, up to 1 minute

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You summon spiked iron plates that surround and impale a target within range. One target you choose within range must make a Dexterity saving throw. On a failure, it takes 8d8 piercing damage and becomes restrained for the duration. On a success, it takes half as much damage and is not restrained. Restrained targets are entombed and impaled by the iron plates. While the target is restrained by this spell, attack rolls against it automatically fail, and it cannot take any action requiring the use of its limbs, except to make a Strength (Athletics) check against a DC equal to your spell save DC. On a success, the target escapes the tomb, and the spell ends.