If you would create one or more artifact tokens, instead create those tokens plus an additional Map token. (It's an artifact with "{1}, {T}, Sacrifice this token: Target creature you control explores. Activate only as a sorcery.")
{1}{U}, {T}: Create a token that's a copy of target artifact token you control.
Worldwalker Helm has 4 listed printings; the most valuable is the Showcase printing from BIG at US$14.72 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
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