Target opponent reveals cards from the top of their library until they reveal a creature card. That player puts all noncreature cards revealed this way into their graveyard, then you put the creature card onto the battlefield under your control.
You may have Body Double enter as a copy of any creature card in a graveyard.
{1}: Choose a creature type other than Wall. Target creature becomes that type until end of turn.
Shuffle your library. Then exile the top card of your library. Until end of turn, you may play that card without paying its mana cost.
Whenever Riptide Entrancer deals combat damage to a player, you may sacrifice it. If you do, gain control of target creature that player controls. (This effect lasts indefinitely.) Morph {U}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) 1/1
As Vesuvan Shapeshifter enters or is turned face up, you may choose another creature on the battlefield. If you do, until Vesuvan Shapeshifter is turned face down, it becomes a copy of that creature, except it has “At the beginning of your upkeep, you may turn this creature face down.” Morph {1}{U} 0/0
+2: Each player draws a card. −1: Target player draws a card. −10: Target player mills twenty cards. Loyalty: 3
Enchant player At the beginning of each end step, enchanted player mills X cards, where X is the number of cards put into their graveyard from anywhere this turn.
Surveil 2, then choose an instant or sorcery card in your graveyard. You may cast it this turn. If that spell would be put into your graveyard, exile it instead. (To surveil 2, look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
Counter target activated ability, triggered ability, or legendary spell.
(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.) Target player takes an extra turn after this one. Return up to one target nonland permanent to its owner’s hand. Exile Karn’s Temporal Sundering.
Enchant creature At the beginning of your upkeep, put a token into play that’s a copy of enchanted creature.