Being able to steal a players commander is often one of the most impactful plays in the format, and being able to do it for a measly two mana makes it clear that this card surely deserves its over-$200 price point on the secondary market
Silversmote Ghoul got a lot of power when Dredge became more of an all-in strategy
Impact Tremors on a creature is exactly what a Goblin deck wants, because they want to dump a million creatures into play and if the rest of us are dead before the attack step, oh well
It is applied the next time the creature is destroyed, its then that the creature becomes tapped
Mockingbird X generic, one blue creature Bird Bard 1/1 Rare Flying You may have Mockingbird enter as a copy of any creature on the battlefield with mana value less than or equal to the amount of mana spent to cast Mockingbird, except it's a Bird in addition to its other types and it has flying
If cards become worthless, many fewer packs will be opened