G.15.1- When asked to "draw" a card, you take the top card from your library (see Rule Z.6) and put it into your hand. [CompRules 1999/04/23]
G.15.Ruling.1- An effect is a draw only if it says so. Being told to take a card from your library and put it in your hand is not a draw. [CompRules 1999/04/23]
G.15.Ruling.2- If you are required to draw more than one card due to a single action, the draws happen in sequence. For example, "draw 3 cards" works just like "Draw a card. Draw a card. Draw a card." [Jackson 1999/12/07] The result of this is that replacement effects which affect the drawing of cards are applied one draw at a time. For example, with Abundance, you choose how to use it before each card. And with Field of Dreams, each and every card is face up along the way. [Jackson 1999/12/07]
G.15.Ruling.3- Abilities which replace a single draw may be played on a multiple card draw. The replacement effect (see Rule T.10) happens prior to drawing the un-replaced cards. [D'Angelo 1997/06/11]
Note- A player loses the game (see Rule G.20) as a state-based effect if they have to draw a card and their library is empty. See Rule Z.6.8. [CompRules 1999/04/23]