Top 1 is a Hearthstone format similar to Top 2. For the purposes of this question, we will make the rules a bit similar to MTG's 3-card blind:

• A deck consists of 30 copies of the same card

• Both players are aware of each other's hands at all times

• Random effects are determined by the player whose turn it is not

Submissions must be the name of a wild-legal card, and a class in which that card can be legally played. At market close, I will run a hypothetical tournament, with each deck being played in proportion to its closing probability, and with all games being played with perfect strategy.

The winner will be whichever deck has the biggest winrate in this hypothetical tournament.