Leyline of Sanctity

If Leyline of Sanctity is in your opening hand, you may begin the game with it on the battlefield.
You have hexproof. (You can't be the target of spells or abilities your opponents control.)

Mystery Booster 2

"An enchanted glade revealed itself, offering safety in its warm embrace. Still she walked on."
—*The Nameless Knight of Summer*

Wilds of Eldraine: Enchanting Tales

If Leyline of Sanctity is in your opening hand, you may begin the game with it on the battlefield.
You have hexproof.

Core Set 2020 Promos

Core Set 2020

A player's "opening hand" is the hand of cards the player has after all players have taken mulligans. If players have any cards in hand that allow actions to be taken with them from a player's opening hand, the starting player takes all such actions first in any order, followed by each other player in turn order. Then the first turn begins.