Serra Avatar [Urza's Saga] Merfolk you can't be attacked except

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

Threshold — Masked Gorgon has protection from green and from white as long as seven or more cards are in your graveyard

sacrifice Sorcerer's Strongbox and draw three cards

It left behind an echoing emptiness more horrible than the grave

"I do not need to pierce your heart to still its beating

Serra Avatar [Urza's Saga] Merfolk you can't be attacked exceptSet: Urza's Saga Type: Creature Avatar Rarity: Rare Cost: {4}{W}{W}{W} Serra Avatar's power and toughness are each equal to your life total. When Serra Avatar is put into a graveyard from anywhere, shuffle it into its owner's library.