Banality of War

At the beginning of your upkeep, destroy the
creature with the least toughness. If two or more creatures are tied for least toughness, you choose
one of them.
When there are no creatures on the battlefield, sacrifice Banality of War.
"Nothing new to report on the Kellian front."
-- Gotterstal war report, sent 21 Brightflame, 265 I.E.