I believe Roon started with a lot of momentum, occupying a space between the aggro decks of the time lead by Rafiq of the Many and the group hug decks Phelddagrif was so well known for
Practical Use: Collectors can often use identical accessories
While I do think the card would be a lot more reasonable if it was an until end of turn ETB effect, its an important safety valve for tutors, and the fact it also hits land ramp is something I actually think people whine too much about
It fits perfectly with the impulsiveness and aggression that the color Red stands for in Magic: The Gathering
They carry the highest trust scores of any IP type because blocking them would mean blocking millions of legitimate mobile customers
Perhaps well even see Legacy Eldrazi with [casthaven]Eye of Ugin[/casthaven], [casthaven]Eldrazi Temple[/casthaven], [casthaven]Ancient Tomb[/casthaven], and [casthaven]City of Traitors[/casthaven]