{W}, Sacrifice Implement of Improvement: You gain 2 life.
When Implement of Improvement is put into a graveyard from the battlefield, draw a card.
An Implement’s last ability triggers no matter why it’s put into a graveyard from the battlefield. You don’t have to activate its first ability.
If you activate an Implement’s first ability, you’ll draw a card from its second ability before the first ability resolves. If the first ability has a target, you need a legal target to activate that ability, and you choose that target before seeing what card you’ll draw.