Spellseeker [Judge Gift Cards 2020] Rogue Artificer if you haven't added mana

if you haven't added mana with this ability this turn

(They put the top card of their library into their graveyard

Set: March of the Machine Commander Type: Creature — Devil Citizen Rarity: Rare Cost: {2}{R} Menace

" Sacrifice it at the beginning of the next end step

Set: The Brothers' War Retro Artifacts Type: Artifact Rarity: Uncommon Cost: {0} {T}

Spellseeker [Judge Gift Cards 2020] Rogue Artificer if you haven't added manaSet: Judge Gift Cards 2020 Type: Creature Human Wizard Rarity: Rare Cost: {2}{U} When Spellseeker enters the battlefield, you may search your library for an instant or sorcery card with mana value 2 or less, reveal it, put it into your hand, then shuffle. Not content with mere answers, she hunts for the truth.