Sheer Mass

When in danger, you naturally react and anchor your feet to the earth using your supreme mass, shrugging off the blows of those who wish to topple you. You add your proficiency bonus to any check or saving throw that seeks to knock you prone or telekinetically move you. You add the same bonus when anything attempts to grapple, restrain, or shove you. If you already have proficiency in the check or saving throw, double it instead.

You may choose this feature during character creation. If you do, replace the Shell Defense racial feature.