Kukazu Finally Rests

As an additional cost to cast this spell, exile a Legendary creature that attacked this turn.
Search your library for a creature or artifact card, reveal it, put it into your hand, then shuffle your library. Then, if the revealed card has a mana
value of 4 or less, you may cast that spell without paying its mana cost.
"Thank you . . . Elderstar . . . " - Kukazu's final
words, in peace