Bronze Guardian's power is equal to the number of artifacts you control
Ironwill Forger Tarkir: Dragonstorm s Ironwill Forger brings back the lieutenant mechanic: at the beginning of combat on your turn, if you control your commander, your lieutenant will give you a bonus
Cosmogrand Zenith Cosmogrand Zenith is fourth, and lets you create tokens or add counters when you cast a second spell each turn
One of the more numerous mechanics that isn't evergreen yet still able to boast a very significant percentage of those cards as having been used in cube and indeed still useful in cube
Raph & Mikey, Troublemakers Back in my day, troublemaking would get your Gameboy and TV privileges taken away
Getting to "ping" for 6 and 5, or even just one of those is pretty significant, it will one shot a walker or a big threat or make a big dent to a life total