Transmute Artifact [Antiquities] Seventh Edition Howltooth Hollow enters the battlefield

Howltooth Hollow enters the battlefield tapped

Dingus Egg deals 2 damage to that land's controller

it has haste

you can't be attacked except by creatures with flying and/or islandwalk

Transmute Artifact [Antiquities] Seventh Edition Howltooth Hollow enters the battlefieldSet: Antiquities Type: Sorcery Rarity: Uncommon Cost: {U}{U} Sacrifice an artifact. If you do, search your library for an artifact card. If that card's mana value is less than or equal to the sacrificed artifact's mana value, put it onto the battlefield. If it's greater, you may pay {X}, where X is the difference. If you do, put it onto the battlefield. If you don't, put it into its owner's graveyard. Then shuffle.