Mogg Flunkies

The whole design lives in one line of text, and it is a study in how to price a body above curve without printing strictly-better stats. The restriction can't attack or block alone scales inversely with how the deck is built: an empty board turns the creature inert, neither swinging nor standing in front of anything, while a board flooded with goblins makes it a clean 3/3 for two, because there is always a friend to act alongside it. The condition is exactly the one a wide aggressive shell satisfies by default. What makes the constraint elegant is when it bites: it punishes the topdeck and the stalled board (the moments an aggressive deck is already losing) rather than the curve-out (the moments it is already winning), so the body feels free when the plan is working and dead when it has fallen apart. That timing is the entire design. You cannot finesse it into a midrange shell and expect the stats to carry; the drawback only disappears when you commit to flooding the board at deckbuilding time, not at the table. Wizards has returned to the same lever repeatedly since (creatures that overpay in raw stats but ask the deck to keep a crowd around them), and this is one of the earliest and cleanest expressions of it: a real downside that an aggressive goblin deck pays nothing for.