Vigil for the Lost
{3}{W}
Enchantment
Oracle Text
Whenever a creature you control dies, you may pay {X}. If you do, you gain X life.
Watch Out
Exile prevents dies triggersRules Note
'Dies' means 'put into a graveyard from the battlefield.' If a creature is exiled instead of dying (Swords to Plowshares, Rest in Peace), dies triggers won't fire. Tokens do trigger 'dies' abilities briefly before ceasing to exist.