Entity: Elfbane Hobgoblin

Source Player Core 2 pg. 13 ^1.1

Hobgoblins were engineered long ago from the unreliable and fecund goblins to be used as an army against the elves. Although the elves ultimately freed the hobgoblins from their bondage, some hobgoblins retain ancestral resistance to magic, which they refer to as “elf magic.” You gain the Resist Elf Magic reaction.

Resist Elf Magic Trigger You attempt a saving throw against a magical effect but haven't rolled yet; Effect Your ancestral resistance to magic protects you. You gain a +1 circumstance bonus to the triggering saving throw. If the triggering effect is arcane, you gain a +2 circumstance bonus instead.