Pale Yearling (5e Creature)
From D&D Wiki
Confer Death’s Resistance. Can grant resistance to Radiant/Necrotic to anyone riding it.
Hooves: Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 9 (1d10 + 3) bludgeoning damage plus 1d8 necrotic damage.