Fathom Fleet Swordjack

The two abilities point at the same target, which is what makes this a multiplayer engine rather than a value trap. The attack trigger scales with your artifact count: every Treasure, Equipment, and mana rock on the table converts a swing into a burst on the face, so a build that would otherwise ignore a 4/3 for its stats has a reason to keep it. Encore takes that same math and copies it across the table. Because the tokens each attack a different opponent and clear off before your next turn, the artifact-count trigger fires once per copy, so a wide artifact board late in the game throws the full burst at every opponent simultaneously. The card is doing two jobs with one number: early, it is a single face-hit whose size tracks your rocks; after it dies, Encore turns that same rock count into a table-wide alpha strike whose reach grows with the number of players. What holds it back is the body itself doing almost nothing to earn the effect. A 4/3 with no evasion and a trigger keyed entirely to artifacts is filler in a deck that isn't stacking them, and the Encore cost is steep enough that you are paying for the multiplication, not the creature. What decides whether this is a burn spell or a battlefield-wide finisher is the artifact count, and that lever is entirely in the deckbuilder's hands.