We came up with a card that could be turned into a second card by rotating it 180 degrees
In 'Lost in Space' (Allen Panakal), an extraterrestrial is stranded on what we must assume is a moon, with a ringed planet seen in the blue and pink background
You get two flying 4/4s out of the deal, and the bonus of your creatures gaining indestructible
The downside is youre limited to cards that actually have the printed madness ability, with only a few ways to apply that ability to other cards
Dromar's Charm is a decent example of this providing you with a hard counter spell when you need to protect your board or stop someone from winning the game by providing five life when you're falling behind, or a little -2/-2 to take out a utility creature
By contrast, even the least interesting Commander 2016 deck is currently clocking in close to $100 retail