The fine print is illegible scribbles, but it is legally binding.

Dockside Extortionist

When this creature enters, create X Treasure tokens, where X is the number of artifacts and enchantments your opponents control. (Treasure tokens are artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

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When Dockside Extortionist enters the battlefield, create X Treasure tokens, where X is the number of artifacts and enchantments your opponents control. (Treasure tokens are artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

The fine print is illegible scribbles, but it *is* legally binding.

When Dockside Extortionist enters the battlefield, create X Treasure tokens, where X is the number of artifacts and enchantments your opponents control.

If an opponent controls an artifact that's also an enchantment, that permanent is counted only once for Dockside Extortionist's ability.

Treasure

{T}, Sacrifice this token: Add one mana of any color.