Kraekua, Ancient hunter

When Kraekua, Ancient Hunter enters the battlefield, sacrifice all other creatures you
control. Search target opponent's library for three
cards and exile them under Kraekua, Ancient
Hunter. Whenever another creature dies, exile it
under Kraekua, Ancient Hunter. During your
upkeep, put a number of 0/0 Fossil creature
tokens onto the battlefield equal to the number
of creatures under Kraekua, Ancient Hunter
"It hungers...still!"