Basilisk Collar (PIP 1008)

Artifact — Equipment • Mana cost: {1} • Fallout • Rare

Equipped creature has deathtouch and lifelink. (Any amount of damage it deals to a creature is enough to destroy it. Damage dealt by this creature also causes you to gain that much life.)
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

A mark of companionship, not subservience.

Illustrated by Artur Treffner.