You may have Sakashima the Impostor enter the battlefield as a copy of any creature on the battlefield, except its name is Sakashima the Impostor, it's legendary in addition to its other types, and it has "{2}{U}{U}: Return this creature to its owner's hand at the beginning of the next end step."
Whenever Shape Stealer blocks or becomes blocked by a creature, change Shape Stealer's base power and toughness to that creature's power and toughness until end of turn.
"Stand back. I know just what to do." —Kiki-Jiki, Mirror Breaker
Flying Soramaro, First to Dream's power and toughness are each equal to the number of cards in your hand. {4}, Return a land you control to its owner's hand: Draw a card.
Haste At the beginning of your upkeep, if you have more cards in hand than each opponent, you may sacrifice a Swamp. If you do, return Akuta, Born of Ash from your graveyard to the battlefield.
Return X target creature cards from your graveyard to your hand.
Takenuma was filled with a chorus of moans, shrieks, and wails. Some came from the living, some from the dying, and some, most horribly, from the dead.
Target player loses 1 life and you gain 1 life. At the beginning of your upkeep, if you have more cards in hand than each opponent, you may return Death of a Thousand Stings from your graveyard to your hand.
Target player sacrifices a creature with mana value 3 or less. At the beginning of your upkeep, if you have more cards in hand than each opponent, you may return Exile into Darkness from your graveyard to your hand.
{4}{B}, {T}: Target player discards two cards. Activate only as a sorcery. Channel — {5}{B}{B}, Discard Ghost-Lit Stalker: Target player discards four cards. Activate only as a sorcery.
Kagemaro, First to Suffer's power and toughness are each equal to the number of cards in your hand. {B}, Sacrifice Kagemaro: All creatures get -X/-X until end of turn, where X is the number of cards in your hand.