She's always willing to lend a hand. It just won't be her own.

Triskaidekaphile

You have no maximum hand size.
At the beginning of your upkeep, if you have exactly thirteen cards in your hand, you win the game.
{3}{U}: Draw a card.

Secret Lair Drop

Magic Online Promos

Bloomburrow Commander

Innistrad: Double Feature

Triskaidekaphile's triggered ability will trigger only if you have exactly thirteen cards in your hand as your upkeep starts. If you have fewer cards in your hand, you won't be able to draw cards during your upkeep in time to cause the ability to trigger.

20 Ways to Win

Peace Offering

Streets of New Capenna

Blossoming Growth

Innistrad: Midnight Hunt

Innistrad: Midnight Hunt Redemption

Innistrad: Midnight Hunt Foil Redemption