Em's Enchant'ry

Once per turn, choose one of the following:
•{t} Discard an artifact, enchantment or sorcery:
create a treasure token.
•{x}: Add {x} charge counter to Em's Enchant'ry.
•{t} Remove {x} charge counter from
Em's Enchant'ry, discard a card: Search
your library for an artifact, enchantment
or sorcery card with a converted mana cost
equal to {x} and add it to your hand, then
shuffle your library.