Herding Cats

At the beginning of your upkeep, create a 1/1 white Cat token.
Every time a Cat you control attacks, put a Meow counter on Herding Cats. If there are seven or more Meow counter on Herding Cats, Cats you control get Lifelink and Double Strike.
"Meow! Meow! Meow! Purr! Meow!"