magic the gathering cards first edition card lot 1st C Card Type All About The First Magic:

The dense foam interior and soft foam lid lining are specifically designed to hold your slabbed cards firmly in place, minimizing movement

Thankfully, it's on the Limited list, with only one copy allowed in each Deck, but all players need to do is XYZ summon once in Yu-Gi-Oh

Y'shtola, Night's Blessed is a Cat Warlock that serves as the face Commander for Scions and Spellcraft, a white/blue/black deck

(Also of note: aside from Labyrinth Minotaur, all Minotaurs at the time were red, so this was effectively a red card.) Speaking of deck restrictions, Malachite Talisman and the entire Talisman cycle are a solid way of making sure that a colorless cards couldnt actually go into just any deck and provide value