Turnblade

Invoking a magic sigil you can choose one creature, including yourself, to ward them against incoming attacks. For the next round, all attacks against the affected creature are done with disadvantage. Swords, arrows, and spells alike glance off of a shimmering translucent dome that surrounds the creature. This does not affect attacks or abilities that deal psychic damage.

This spell increases in effectiveness as you grow more powerful. At 5th level attacks that make it through the ward are decreased by 1d6, at 11th level 2d6, and at 17th level 3d6. This effect can reduce damage to zero.