south remnant
Similar to the Football relic in modded Slay the Spire, and specifically an idea to throw a challenge to those who have ungodly winstreaks in high difficulty roguelikes but take several minutes talking out possible courses of action before playing cards:
You have 15-20 seconds to complete any action, in any menu. Pausing the game will not work. Taking any action (playing a hand, buying a joker, buying a booster pack, skipping a blind) resets this timer.
If you have partially selected cards to play a hand and time runs out, the cards you've selected will be played as a hand. If you have not selected any cards and time runs out, either nothing happens and you lose a hand, or (to prevent abusing the previous with Dusk) you have one card discarded at random if you have a discard available or one card is played at random and that counts as a played hand.
If you have not selected a blind and time runs out, the next one is automatically started.
If a joker/pack is not bought and time runs out, you automatically get pushed to the next round selection screen.
If you are on a booster pack card selection screen and time runs out, the pack is skipped.
I believe there is a show of skill to be had in not only taking the most objectively correct action in a given situation but being able to do so quickly, and this would be another way to raise the game's difficulty at higher levels without resorting to "you need to earn more chips."
sullen fog
distant moon