Only a few of these cards exist, and one recently sold for $150,000
For example, low mana value cards have low opportunity cost, and they tend to make positive tempo exchanges versus higher-MV ones, making those expensive cards less playable
The frames also come with double matting in a variety of colors to choose from, so you can create a truly unique display
If youre a competitive player, a simulator with a deck-building function is a huge asset
Hell, the mere presence of Berserker Soul in the game could count, as it's one of the only Duel Monsters -era anime cards to be usable in the Tag Force series, and even has a special mechanic where it can continue to trigger after the opponent's LP reach 0
The second one is Burn in the form of Creeping Chill and (sometimes) Conflagrate