The Last Night

Take an extra turn after this one. At the beginning of that turn's end step, destroy all nonlegendary creatures. They can't be
regenerated. Your life total becomes 0.
"Cold the last night enters in,
still and silent, without a din.
Songs of longing creeping near,
eerie silence, devoid of cheer.
Exhausted footsteps shambling on,
dreading the coming of the dawn."