How do I do ranked team 5v5 in dynamic queue?

Just invited 4 of your friends you will be matched up against a premade of 5 as well or in some cases a team of 4 and a random easiest way for freelo

^^ What he said. Just make a team of 5 and play.

If ranked teams have been removed, doesn't that mess with the challenger circuit for aspiring pro teams?

I thought the top of the 5s ladder got into the pool of potentials.