Konstrari Improviser // Soul Tether

Being prepared isn't a copiable value. If a permanent becomes a copy of a prepared creature, it won't be prepared. That permanent will have the alternative characteristics, though, and some other effect could cause it to become prepared later.

Preparation cards can be cast only with their base characteristics.

Heartwood tokens are a kind of predefined token. Each one is a red and green artifact with the artifact subtype Heartwood and the ability " tap : Add red mana or green mana ."