Katilda and Lier [March of the Machine Commander Prerelease Promos] Token Enchantment Stoic Sphinx has hexproof as

Stoic Sphinx has hexproof as long as you haven't cast a spell this turn

if you cast it from your hand

Whenever your commander attacks

Set: Outlaws of Thunder Junction: Breaking News Type: Instant Rarity: Rare Cost: {W}{B} Exile target monocolored permanent

Katilda and Lier [March of the Machine Commander Prerelease Promos] Token Enchantment Stoic Sphinx has hexproof asSet: March of the Machine Commander Prerelease Promos Type: Legendary Creature Human Rarity: Mythic Cost: {G}{W}{U} Whenever you cast a Human spell, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it.)