Arwen, Lady of Rivendell

Whenever another creature enters the battlefield under your control, you gain life equal to that creature's toughness.

The braids of her dark hair were touched by no frost, her white arms and clear face were flawless and smooth, and the light of stars was in her bright eyes, grey as a cloudless night; yet queenly she looked, and thought and knowledge were in her glance, as of one who has known many things that the years bring.