The Bite-Sized series of articles is meant to take the most powerful cards in Dominion and give a short explanation of what makes them powerful.
Quartermaster is almost always a must-buy as long as there is anything halfway decent to gain for $4 or less, and if not, just gaining Silvers is still pretty powerful. Much of the time you will want two Quartermasters and will want to put cards into your hand pretty often, but don’t forget that you can gain Estates and never put them in your deck. Quartermaster has extra synergy with any victory card that it can gain, just for the sheer amount of points that don’t make your deck worse, but Cemetery is probably the most powerful of these.