Mox Opal
53PlayableLegendary Artifact
Double Masters
2HG Rating
53/100
Plays about the same in 2HG as it does in any other format.
Weak in 2HGNeutralFormat staple
No 2HG-specific rules fire on this card — it plays much the same here as anywhere else.
Ratings start at a neutral 50 and are adjusted by rules derived from 2HG's structure — shared 60 life, shared turns, two opponents. They'll be recalibrated against real play rates once teams start submitting decklists.
Oracle text
Metalcraft — 
: Add one mana of any color. Activate only if you control three or more artifacts.
Legality
standardpioneermodernlegacyvintagecommander
Plays well beside it
Fits the same colour identity — good candidates for your teammate's deck.
Suggestions are characteristic-based for now. Once teams submit pairings, this becomes a real co-occurrence score: played in X% of teams whose partner deck runs Mox Opal.