This applies to very old cards most of the time, but some rare versions of cards have their cost raise in a similar way (such as Kaladesh Masterpieces or Zendikar Expeditions)
Discard spells are typically used to disrupt your opponent, either by taking their only two-drop, removal spell, or combo piece
In fact, many new players have joined because of Lord of the Rings so, yay for the new player base
Id try to replicate that with: $15 cool art binder and deck sleeves for instant storage $33 in cool arts, not even big hits just stuff that looks cool $52 in packs Open some packs, place a hit in them and reseal
For example, superfriends decks get to activate their planeswalkers and bring them closer to ulting, a shrine deck gets those juicy upkeep triggers, and so on