Urza's Armory

Whenever one or more white creatures are put
into a graveyard from the battlefield, you may
discard a sorcery card. If you don't, all creatures
with toughness 4 or less can block an additional
creature this turn.
1{w}: Target opponent reveals the top two cards of
his or her library. That player puts all Equipment
cards from among them onto the battlefield, and
puts the rest into their graveyard.