Blake, Brilliant Brewer

When Blake, Brilliant Brewer enters the
battlefield or attacks. Each player searches their library for
a card and adds it to their hand. Your opponents cannot cast spells or activate abilities the turn
they search their library this way.
Whenever an opponent searches their library,
that player reveals each card chosen and you
create a colorless construct artifact creature
token with power and toughness equal to that
card's Mana Value