Adding board pressure lets you kill your opponents fast enough to make use of those resources and overwhelm them, or you can outvalue your opponents with the built-in flicker synergy
You may put it into your graveyard.) : Lazav becomes a copy of target creature card in your graveyard with mana value X, except its name is Lazav, the Multifarious, it's legendary in addition to its other types, and it has this ability
The most obvious target would be extra combat spells, especially if you've adding on some mana generators from attacking (various treasure generators, Neheb, some dragons)
This set also had their masterpieces, that were all artifacts with an artistic golden border
Play Boosters Each Outlaws of Thunder Junction Play Booster contains 14 cards and a token/ad card or an art card
Im grouping them together because I find them largely interchangeable