Sakashima the Impostor [Mystery Booster]Set: Mystery Booster Type: Legendary Creature Human Rogue Rarity: Rare Cost: {2}{U}{U} 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 the Llanowar elves gather the fruits of their forest

Set: World Championship Decks 2004 Type: Sorcery Rarity: Uncommon Cost: {2}{U} Search your library for an artifact card

Set: Time Spiral Timeshifted Type: Creature — Zombie Rarity: Rare Cost: {2}{B}{B} Zombie spells you cast cost {1} less to cast

or "AK" for short)

its commander wounded

Reverse Type: Instant Tap target permanent

each other player sacrifices a creature

But usually it's better to make a wall out of the wood and let trouble do the knocking

Set: International Collectors' Edition Type: Creature — Elf Druid Rarity: Common Cost: {G} {T}: Add {G}

−7: Exile the top seven cards of your library

return all land cards from your graveyard to the battlefield tapped

and you may spend mana as though it were mana of any type to cast those spells