Bentley, Unmatched Genius

Whenever Bentley, Unmatched Genius enters the
field or attacks, search your deck for one Instant,
Sorcery, or Enchantment with a converted mana
cost of {4}or less, and add it to your hand. Then shuffle.
Whenever you play an Instant, Sorcery, or
Enchantment, create one treasure token.