Dota 2’s metagame is notorious for shifting and changing course on a dime thanks to the flexible nature of hero roles and the huge impact items have. These days especially, diverse tournament metas are to be expected, with only a handful of heroes going unpicked.
At the highest levels of play, games can be won or lost even before the creeps spawn. Having a good hero composition can spell the difference between a struggle to breach high ground or a team with heroes that complement each other and form a well-oiled machine.