Kerode, Rock Crawler

When Kerode, Rock Crawler enters the battlefield, for each basic land played this game by
any player, exile one creature of any player.
For each creature exiled this way, Kerode, Rock Crawler perpetually gets +3/+3.
Whenever Kerode, Rock Crawler attacks, it perpetually gets -3/-3.
Whenever Kerode, Rock Crawler dies, equally distribute it's remaining power and toughness to creatures you control.