Ralts (91/147) [Sun & Moon: Burning Shadows]Set: Sun & Moon: Burning Shadows Type: Fairy Rarity: Common Retreat cost: Colorless

up to one target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value

Set: HeartGold & SoulSilver: Base Set Type: Item Rarity: Promo

destroy all nontoken permanents it touches

each player returns all cards with the same name as that spell from their graveyard to the battlefield

Set: Best of Promos Type: Metal Rarity: Promo Retreat cost: Colorless

Schwarzwald

{1}: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn

More importantly

When Avalanche Riders enters the battlefield

Set: Friday Night Magic 2000 Type: Sorcery Rarity: Rare Cost: {2}{R} Destroy target land

then put the rest on the bottom in a random order

Set: Beta Edition Type: Creature — Zombie Rarity: Rare Cost: {1}{B}{B} Other Zombie creatures have swampwalk