This article contains information that does not apply to the current version of Undercards. Please read with caution, and if possible, update the article.
Fishing Rod is the 1st of 11 cards shown planned for Beta 18.1 as shown here. Previous Versions can be found here.
For 3G, you get a monster with 2/3 and, since Beta 56.0, the effect to let you draw a card when played and at the start of your every turn. This can be helpful in heavy draw decks.
As of Beta 53.1, it's also part of a player's starting deck.