Seven In One Blow

(You may cast a legendary sorcery only if you control
a legendary creature or planeswalker.)
Deal 7 damage divided as you choose among any
number of creatures controlled by other players.
Each player loses 7 life for each creature they
controlled that was defeated this way.
And so the little tailor constructed the finest belt,
and embroidered upon it was the tale of his triumph
against the seven sugarsap flies.