Maralen of the Mornsong — ruling 1

Maralen prevents players from drawing cards for any reason, including as a cost, as an effect, and as a result of the “draw a card” turn-based action during the draw step.

Maralen of the Mornsong — ruling 2

While Maralen is on the battlefield, no player can lose the game due to being instructed to draw a card with an empty library.

Maralen of the Mornsong — ruling 3

While Maralen is on the battlefield, replacement effects that instruct a player to do something instead of drawing a card won’t work.

Maralen of the Mornsong — ruling 4

While Maralen is on the battlefield, a player can’t choose to draw cards (or choose to have another player draw cards) as a spell or ability resolves. For example, if you cast the Development side of Research // Development (“Put a 3/1 red Elemental creature token onto the battlefield unless any opponent lets you draw a card. Repeat this process two more times.”), you’ll put three Elemental tokens onto the battlefield because your opponents can’t “let you draw a card.”

Maralen of the Mornsong — ruling 5

The effect of the triggered ability is mandatory. The life loss isn’t a payment; you’ll lose 3 life even if you have 3 or less life left. Unless your library is empty, you must put a card from your library into your hand.

Maralen of the Mornsong — ruling 6

In a Two-Headed Giant game, Maralen’s triggered ability will trigger twice per draw step (once for each player on the active team). Maralen’s controller chooses the order to put the abilities on the stack.

Maralen of the Mornsong : règles, fonctionnement et interactions (MTG)

Maralen of the Mornsong is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Players can't draw cards. At the beginning of each player's draw step, that player loses 3 life, searches their library for a card, puts it into their hand, then shuffles.

How it works : Maralen of the Mornsong

Original English text — Wizards of the Coast / Scryfall

#1April 1, 2008· Wizards of the Coast
Maralen prevents players from drawing cards for any reason, including as a cost, as an effect, and as a result of the “draw a card” turn-based action during the draw step.
No other card is named in this ruling.
#2April 1, 2008· Wizards of the Coast
While Maralen is on the battlefield, no player can lose the game due to being instructed to draw a card with an empty library.
No other card is named in this ruling.
#3April 1, 2008· Wizards of the Coast
While Maralen is on the battlefield, replacement effects that instruct a player to do something instead of drawing a card won’t work.
No other card is named in this ruling.
#4April 1, 2008· Wizards of the Coast
While Maralen is on the battlefield, a player can’t choose to draw cards (or choose to have another player draw cards) as a spell or ability resolves. For example, if you cast the Development side of Research // Development (“Put a 3/1 red Elemental creature token onto the battlefield unless any opponent lets you draw a card. Repeat this process two more times.”), you’ll put three Elemental tokens onto the battlefield because your opponents can’t “let you draw a card.”
No other card is named in this ruling.
#5April 1, 2008· Wizards of the Coast
The effect of the triggered ability is mandatory. The life loss isn’t a payment; you’ll lose 3 life even if you have 3 or less life left. Unless your library is empty, you must put a card from your library into your hand.
No other card is named in this ruling.
#6April 1, 2008· Wizards of the Coast
In a Two-Headed Giant game, Maralen’s triggered ability will trigger twice per draw step (once for each player on the active team). Maralen’s controller chooses the order to put the abilities on the stack.
No other card is named in this ruling.