Manahive

“Rolling Hamsphere” is a silver-bordered Un-set card (from Unstable), and is a colorless artifact with a die-rolling effect.

Equivalent cards (colorless, artifact, and dice-rolling theme) include:

• “Goblin Dice” (dice-rolling, silver-border, artifact)
• “Sword of Dungeons & Dragons” (colorless equipment, die-rolling effect)
• “Vraska’s Fall” (dice-rolling, but not an artifact, so less equivalent)

Reason: These are colorless artifacts (except “Vraska’s Fall”), from Un-sets or similar joke sets, with dice-rolling mechanics.