shiinotic pokemon card (Extradimensional Crisis #27/103, 3-Diamonds) Shiinotic - StallDecksRule

This shapes the gameplay as you have to plan ahead, knowing that your summons (and your opponents) wont be around forever

Regular Creatures, Sorceries, Enchantments, and more can only be played during their owners turn, but Instants can be cast whenever their owner chooses

While these ones only have you rolling d6s, cards like Comet, Stellar Pup and Attempted Murder will let you roll a LOT of them

The scry mechanic also works great if you can get the card to the top as well

Incapsula incident ID: 386000140117172151-516503940884464530

Over time, these different prices should equalize somewhat, even if they never completely converge