Orianna, the Lady of Clockwork

Skulk
{u}{t} Create a colorless artifact token named Ball with " Sacrifice Ball. Deal one damage to target creature or player. "
{w}{x}{t} Sacrifice X artifacts and you gain X life.
{w/u} Orianna, the Lady of Clockwork gains hexproof until the end of the turn.
"When a moth emerges from its chrysalis, does it remember its life as a caterpillar?"
~ Orianna