Wanda, the Scarlet Witch

+1: You may discard a card, if you do, draw a card. Then, if you discard a card this way, each opponent loses 1 life.
-3: Choose a card from among Chaos Warp, Hex or Void. Create a copy of the chosen card and cast it without paying its mana cost.
-7: Declare a card type. For each player, search and exile all the cards with the declared type from their battlefield, graveyard, hand and library.