Being able to sacrifice Goblins for red mana might not seem overpowered, but due to the way Goblin strategies tend to snowball, providing a slightly more destructive red version of Llanowar Elves is often enough to help Goblin decks outspeed opponents with ease
These cards are so prevalent now that Im actually surprised when we dont see a wheel effect in a new Magic set
The card is good, and works well with high-power creatures or dice-manipulation cards like Barbarian Class
In a word, no - weighing Pokmon packs is not a reliable way to increase your chances of getting better cards
Additionally, it has been revealed that not every card is eligible for trade, making the system already a little broken
Most Standard Magic decks have many spells that cost two, three, and four mana, and fewer spells that cost one or less and five or more