Card name

The Soul Stone

Mana cost

{1}{B}

Mana value

2

Type

Legendary Artifact — Infinity Stone

Rarity

mythic

Set

Marvel's Spider-Man (SPM)

Collector number

242

Artist

Madeline Boni

Official rulings

2025-09-19 Being harnessed isn't copiable. If something else becomes a copy of The Soul Stone, it must be harnessed separately. Similarly, if The Soul Stone is already harnessed and becomes a copy of something else, it stays harnessed, though it's very likely that won't be relevant until that copy effect ends.

2025-09-19 "Harnessed" is a designation that the permanent has once an ability instructs you to harness it. It has no special rules meaning other than being a designation that the ∞ ability (and, theoretically, other effects) can see.

2025-09-19 Until it is harnessed, The Soul Stone doesn't have the ability listed after the infinity symbol. It also doesn't have that ability in zones other than the battlefield.