In Mood Swings , you don't "destroy" cards, you "put them in the discard pile." We would eventually create some unique vocabulary for Mood Swings , but that would come later
Now the window has been extended to allow for a three-year cycle, allowing the pool to be much bigger and also means that you and I dont need to buy all new cards so soon
Even when they dont have one in-hand, its better than Duress, taking Ulamog, the Ceaseless Hunger or whatever other big threat they may be ramping toward (not to mention any other copies in their deck if you have delirium, which you often will)
Go-Shintai of Boundless Vigor Another one thats a house in Limited but pretty much useless in Commander
The resulting card strikes a distinctive note, combining elements of an aircraft, sailing vessel, and outright palace into one massive vehicle