If you do, draw a card, then you may put a creature card and/or a land card from your hand onto the battlefield
Can you draw cards at instant speed if you need to protect her
This was one of those cards that a lot of decks were on the edge of playing, either because they couldn't quite get threshold reliably or they didn't want to splash one of the colors, inviting them to play a high-risk but high-reward game with their mana bases that both cost them games and won them games they had little right to win
Three cards sound like a lot to give an opponent, but there are ways to get around that
Though were primarily focusing on card draw here, the one life gain on trigger may be relevant in your deck as well as an enabler for other cards, like Archangel of Thune or Cleric Class
On top of that, it reads: At the beginning of your next main phase, add an amount of colourless mana equal to that spells mana value." Basically, not only do you get to say no to something, you also get to cast something bigger on your next turn