Lullaby

Enchant {w}(You may sacrifice a non-token creature
you control with {w} in its casting cost to exile this
permanent, then return it to play under its owner's
control.)
Flash
When Lullaby comes into play, target creature
may not attack or block until Lullaby leaves the battlefield. You may pay {1}{w} at any time to
counter an activated ability of that creature.