You may play them this turn" Storm's ability reads as follows: "Whenever Storm deals combat damage to a player, the next instant or sorcery spell you cast this turn has storm." How MTG x Marvel's Storm Can Go Infinite in Commander Explained Storm's ability makes it so that players can easily find ways to cast multiple spells per turn and then copy a big one to finish their opponents
It got so bad that many combo-based decks just dropped their combo strategy altogether in favor of just rushing in a Siege Rhino
He can serve a similar purpose to Rabbit Battery in that, for one mana, Goro-Goro can give all of the player's creatures haste
more-powerful cards are generally the rarest
If the cards are in near mint condition (limited edgewear, no creases or dents, few holo scratches) that will increase their value
This may come up if you cast a discard spell on your opponent and find a good target, especially in the mirror match