pokemon cards ho oh gx Ho-Oh 21/147 Holo Ultra Rare Sun & Moon Burning Shadows Car Colorless Eternal Flame Ho-Oh GX 21/147 Burning Shadows

These references aren't totally obscure, but I also picked ones that aren't such popular knowledge that even people who haven't played the games probably know about them, like Sephiroth killing Aerith

You need to see more cards than your opponents so that you can bury them beneath all your removal

While Black Panther has a specific color moniker in his name, that mana energy was just not right for our noble king of Wakanda

Steeling Stance is an instant which boosts all creatures you control by % 2B1/% 2B1), or a support effect for the main spell (such as Pride of the Clouds, where you pay one blue, one white, and two other and reveal it from your hand and put a 1/1 blue and white bird creature token with flying into play