Frostburn Weird [Return to Ravnica] Elf Mutant and other players can't gain

and other players can't gain control of them

"Dear Magic R&D

Set: World Championship Decks 2000 Type: Enchantment Rarity: Rare Cost: {1}{U} Prevent all damage that would be dealt to you by sources you don't control

Set: The Lost Caverns of Ixalan Special Guests Type: Creature — Dinosaur Rarity: Mythic Cost: {4}{G}{G} This spell can't be countered

and new ones grow in every sixteen days

Frostburn Weird [Return to Ravnica] Elf Mutant and other players can't gainSet: Return to Ravnica Type: Creature Weird Rarity: Common Cost: {U R}{U R} {U R}: Frostburn Weird gets +1 1 until end of turn. Many chemisters are oblivious to the innumerable machinations of their guild, instead focusing obsessively on creating the perfect weird.