It's good to be aware of these archetypes because they sometimes come up in Limited, like the Lost in the Woods "combo" in Dark Ascension Limited, or making your own surprising imitation of a Fog deck by just drafting a pile of removal and no good win conditions
It supplies a ton of reach at a flexible casting cost
If you sacrifice a creature, (say it's an artifact creature, so use Osgir's ability), it will die, then be exiled (due to Hofri's trigger), this will create a 3/2 Spirit creature token (due to Quintorius' trigger) and a copy of the original creature that is also a Spirit
Same with Selesnya Guildmate or Slimefoot, the Stowaway
Given how strong all of those abilities are, its only natural that thisll see a lot of play, even outside of purely colourless decks
This is red card draw bolted onto red removal, with an impulse draw effect that lets you play the exiled cards until the end of your next turn