In more recent years, color hosers are fewer, weaker, and more situational, and part of that is that some of these older cards simply make it so that one person cant play Magic at all, which isnt exactly fun, as pointed out by Patrick Sullivan
It also pairs well with Halo Fountain both mechanically and in flavor, making it easier to achieve the alternate win condition
Sometimes you have the space to tick up enough loyalty counters for a planeswalker to survive its ultimate with a counter or so to spare
What does Rise of the Dark Realms do
During an interview I asked the developers at DeNA if it would be possible to collect an entire set without spending any money, and as much as it seemed to pain them to comment on monetization, the answer was no: some monetary investment would be necessary to acquire a full collection