It Who Stalks

Hexproof, skulk
Whenever Stalking Shape deals combat damage
to a player, you may draw a card or have target
player roll the Chaos Library.
"As she reached the corner, she saw the shadow just
around the bend. Something wasn't right. She slowed
down and moved carefully, she didn't feel that it had
spotted her yet. As she sneaked, it was waiting in the shadows for her and..."