Worldwalker Helm

世界歩きの兜 (Worldwalker Helm) (ja)

Artifact (CMC 3)
If you would create one or more artifact tokens, instead create those tokens plus an additional Map token. (It's an artifact with ", , Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery.")
, : Create a token that's a copy of target artifact token you control.