As long as Unown [Z] is Benched, you pay no Energy cost to retreat a Pokémon with Unown in its name.
You may have up to 4 Basic Pokémon cards in your deck with Unown in their names.
![Unown [Z] (Darkness, and to Light... No. 060)](https://static.tcgcollector.com/content/images/d4/f8/d9/d4f8d9d3be76929b55d4c4c42ca329d214b50770cc4d668437ba48d9a3d1f427.jpg)
