Vampiric Tutor (J18) [Judge Gift Cards 2018] Stronghold Athreos isn't a creature

Athreos isn't a creature

you may sacrifice any number of creatures

They have "When this creature dies

Set: Unlimited Edition Type: Artifact Rare Cost: {0} {T}: Add {B}

Set: Alliances Type: Instant Rarity: Uncommon Cost: {3}{U}{U} You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost

Vampiric Tutor (J18) [Judge Gift Cards 2018] Stronghold Athreos isn't a creatureSet: Judge Gift Cards 2018 Type: Instant Rare Cost: {B} Search your library for a card, then shuffle your library and put that card on top of it. You lose 2 life. "I can tell you what you wish to know. But first, there is the matter of my fee."