Ghalta, Primal Hunger captures the flavor of what a mono-green commander should be on a, well, primal level
There's tons of examples like that
But there are some outstanding offenders in pushing it too far like Dockside, Smothering Tithe, and Prosper (and I guess Ragavan in other formats)." He concluded by saying: "for me, Treasures are fine but they are dangerous when it comes to power creep and should be heavily playtested in R&D
A single discard effect will rarely inflict devastating damage, unless your opponent doesnt know the worth of their own cards
This is definitely more of a Commander card than anything that Standard will see, especially since it costs five mana for an artifact that doesn't do anything on its own
Being able to ramp when it attacks or enters the battlefield is a powerful effect, especially in formats with access to fetch lands