Afterlife

Afterlife is a keyword ability found on creatures. Similar to Doomed Traveler from Innistrad, it was introduced as a mechanic in Ravnica Allegiance for the Orzhov Syndicate.

Description
Afterlife is a triggered ability and includes a number. When the creature with afterlife dies it creates that number of 1/1 black and white Spirit creature token with flying.

Afterlife triggers only when the creature dies, meaning "goes to the graveyard from the battlefield." If it's exiled directly from the battlefield or similar, afterlife won't trigger.

Rulings

 * Because blockers are chosen all at once, you can't block with a creature with afterlife, wait for it to die, then block with the resulting Spirit tokens.