Tormund's Remnant Aegis

You crack the whip and gem dust gathers around your allies. the gems on each person shatter and form a stained glass dome around each of them. The stained glass shows a man with a whip in both hands staring heroically up at a large blue dragon. The words "Gone but not Forgotten" are written across the bottom of the image.

Cast this spell when you and 1 or more friendly creatures are forced to make a Strength, Dexterity, or Constitution saving throw. Friendly creatures in the area (excluding you) have advantage on the saving throw that triggered this spell. Additionally, when an affected creature succeeds on that saving throw that allows it to take only half damage, it instead takes no damage, and only half damage if you fail.

You fail the saving throw that triggered this spell.