They each have three basic land typeslike Forest, Island, and Swampprinted on them
It has a lot of synergy with creatures and effects that can move counters between permanents
Cards like Cloud, Ex-Soldier, Gilgamesh, Master-at-arms, and Firion, Wild Rose Warrior, are great at pulling out the best of Equipment, boosting creatures to a ridiculous degree
Wylls Reversal is a cheaper Wild Ricochet 25% of the time, and still solid the rest of the time at three mana
In deck building, this balance is called the "mana curve." Each spell has a mana value, which is the total mana cost of a spell
Shes not the most powerful artifact commander (thank goodness), but shes the one that lets you play all of your Esper cards with your various red artifact cards, and thats awesome