Tiefling Heritages: Demon-Spawn Tiefling for D&D 5th Edition

My conversion of Pathfinder's Blood of Fiends to DnD 5th Edition continues:

Demon-Spawn Tiefling

(Unless otherwise noted, all traits are per the 5th Ed. Player's Handbook)

Ability Score Increase. Your Strength score increases by 2, and your Charisma score increases by 1.

Abyssal Resistance. You have resistance to lightning damage.

Abyssal Legacy. You know the thaumaturgy cantrip.  Once you reach 3rd level, you can cast the longstrider spell once per day as a 2nd-level spell.  Once you reach 5th level, you can also cast the shatter spell once per day.  Charisma is your spellcasting ability for these spells. 

Foulspawn Feat

Prerequisite: Demon-Spawn Tiefling

• When you score a critical hit with a melee attack, you can roll an additional 1d6 damage and add it to the extra damage of the critical hit.

• You can roll and additional 1d4 damage and it to damage rolls against objects and constructs.