Basilisk Collar 199 (Commander: Adventures in the Forgotten Realms)

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.)

NM - $11.20
LP - $8.90
MP - $6.70
HP - $4.50
DMG - $2.30