As a simple example, until someone finds a checklist or similar for Ice Age development, I cannot be fully sure that a Sphere of Annihilation version wasn't playtested for Ice Age in 1992, and my collection of pre-Alpha Orbs may well be incomplete without me knowing it
I went home at 930am after I posted that I made diamond tier 1 this morning
Gwenom, Remorseless Want to play a Bolas' Citadel that isn't a game changer
Pantlaza, Sun-Favored might have a fair version of discover since it can only be triggered once per turn, but it still makes for a fun Commander deck building experience with creatures of different toughness and cards of varied mana values
The closest comparison is Defiant Strike, a card that still has its niche applications
DH: In exploratory design, before getting too deep into deckbuilding and card design, we brainstormed what games offered the most for what gameplay we wanted with the decks as well as being the more commonly known storylines among the audience