While Pikachus alternative color palette looks similar to the original, that hasnt hurt the value of this card, making it one of the most highly sought-after Pikachu cards on the market
While you can often find her at the head of a planeswalker-themed deck, it turns out that a free proliferation effect at the end of your turn is great when it comes to energy counters too
Coven is checked after that, so the +2 power can be used to actually form a coven or, if timed incorrectly, ruin an existing coven if the +2 means that two of your creatures now have the same power
Exile all the cards from your library, then put the chosen cards on top of your library
This can be as big of a rout as Blasphemous Act with Fall of Cair Andros.
Effect on Limited Common is for cards that are the backbone of Limited, things that are necessary to make the format work