Jawbone Greatsword

(This equips to you. Once per turn you may fight a
creature or attack an opponent if they control no
creatures. You may only have one Relic at once.
When you are dealt damage greater or equal to this
relic's toughness, destroy it.)
When Jawbone Greatsword enters the battlefield,
if a creature died this turn, create a colorless
Lure artifact token with "{6}, Sacrifice this
artifact: Create an 8/6 red Ogre creature token
with trample."