Source: Unearthed Arcana 81 - Heroes of Krynn

Prerequisite: 4th Level, High Sorcery Initiate Feat, Any Non-Evil Alignment

Your oath to use magic to make the world a better place has been recognized by the Order of the White Robes, granting you these benefits:

• Protective Magic. You learn one 2nd-level spell of your choice. The 2nd-level spell must be from the Abjuration or Conjuration school of magic. You can cast this feat’s 2nd-level spell without a spell slot, and you must finish a long rest before you can cast it in this way again. You can also cast this spell using spell slots you have of the appropriate level. The spell’s spellcasting ability is the one chosen when you gained the Initiate of High Sorcery feat.

• Protective Ward. When you or a creature you can see within 30 feet of you takes damage, you can use your reaction to expend a spell slot and weave protective magic around the target. Roll a number of d4s equal to the level of the spell slot expended and reduce the damage the target takes by the total rolled on those dice + your spellcasting ability modifier.