"This party is such fun—but it's a shame to mourn just one."
—Irini Sengir

Masters Edition II

Funeral March

Enchant creature
When enchanted creature leaves play, its controller sacrifices a creature.

Enchant creature
When enchanted creature leaves the battlefield, its controller sacrifices a creature of their choice.

"Turn the key deftly in the oiled wards,
And seal the hushed casket of my soul."
—John Keats, "To Sleep"

Fifth Edition

If enchanted creature leaves play, its controller sacrifices a creature.

Homelands

When target creature leaves play, that creature's controller sacrifices a creature he or she controls. Ignore this effect if that player controls no creatures.