I will quickly cover why the other cards are so strong first
Trade, marked Sounds absurd, I know Pokemon is part of the Trading Card Game genre but it's surprisingly rare for video games, with tons of titles that attempt to recreate the feel of card battlers, but completely omit this key part of the experience
Here's what those terms mean: Expansion: These are the regular Magic: The Gathering sets, legal in Standard, and released at regular intervals throughout the year
On attack, Teval mills three cards from your library and puts a land card from your graveyard onto the battlefield, and whenever a card leaves your graveyard for any reason, Teval makes a 2/2 Zombie Druid
But alright, I get it
Investigating twice means that this card can easily replace itself, and even function as card advantage