We work with Pokmon cards every day and understand what streamers and resellers actually need: cards that look good, are easy to sell, and can be bought in repeatable quantities
Vanguard of Brimaz was my, er, mane man in the early iterations of my first deck
Its a pretty cute scene, even if Gulpin does look ridiculous
Another example is Mine Is the Only Truth, which makes you draw a card whenever a player casts a spell
Every Chocobo bundle comes with a promo Birds of Paradise in the form of Paradise Chocobo
Cackling Fiend Most discard in multiplayer is weak because it only hits one player, often makes an enemy of that player, and usually doesnt scale in power to reflect the neediness of card advantage in a format where you are being outdrawn one-to-X, where X is the number of opponents you have