Hunting on the Highlands

Whenever a creature enters the battlefield under
a player's control, if that player controls the most
creatures, each of their opponents searches their
library for a creature card with converted mana
cost equal or less to the number of creatures onto
the battlefield and puts it into their hand, then
shuffles their library."
{3}, Pay 3 life, {t}: Target creature that entered the
battlefield this turn fights another target creature.
Any player may activate this ability.