Short of a Field of Ruin or Wasteland, your Academy Ruins should be safe from harm and ready to recur any artifact in your graveyard at instant speed
It also has synergy with other Musketeer characters by powering them up
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they offer mana of one of two colors and they can enter untapped, but there are only so many shocklands you can play untapped before it becomes a problem, and more importantly, there are a lot of Magic formats where they are commonly played, so players will encounter them a lot
maybe pecharunt in there too, or even united wings murkrow Cosmic holo pumpkin Munki is best Munki Assuming no ex-es, SSP Gimmighoul, TWM Dreepy and Drakloak, DRI Marnie's Impidimp and Morgrem, SSP Eevee, and JTG N's Zorua would all be cool