What you might not realize with this one is that it lets you put any number of land cards an opponent owns in exile into play with its trigger
That's just nasty here
Here are some places I like this: Spellslinger - Alongside triggers like Guttersnipe or Talrand, Sky Summoner in Izzet, with Jeskai or Boros with Young Pyromancer or Monastery Mentor
Add in discard outlets like big creatures with Cycling (which you can grab back), Golbez, Crystal Collector's own Surveil ability, and old classics like Bottomless Pit, and we've got a nasty little engine here
For example, amethyst glimmers like Elsa Snow Queen use magic to keep their options open, while powerful steel glimmers like Captain Hook Forceful Duelist are strong and tough
If you did a good enough job gaining lore, you could even pull off a win this way