Vaukan, Gilted Crusader

Whenever Vaukan, Gilted Crusader deals combat damage to a player, search your library for an
artifact card and exile it. You may cast that card
for as long as it remains exiled.
Discard two cards: Vaukan can't be blocked until
end of turn.
Equip abilities you activate that target Vaukan
cost {x} less to cast, where X is the number of
cards in your hand, rounded down.