When they enter the battlefield, you can return an Artifact card from your graveyard to the battlefield, and given the colors theyre in, flickering them or playing them multiple times isnt hard to do at all
Since then, it has been used all over pop culture, from Star Trek to Harley Quinn
It counters just about everything, does it every single turn, and is a massive pain for your opponents
While you're the monarch, whenever you tap a land to add mana to your mana pool, you can add an additional mana of any color as well
Nemata, Grove Guardian, while expensive for a commander, also has the potential to be a huge threat at any point beyond the midgame as both token generator and payoff
6 Day Of Judgment Showcase Fractured Foil - $179.94 Speaking of board wipes we have one of the best to ever grace Magic, Day of Judgement