Cryptex | Artifact | | {T}, Collect evidence 3: Add one mana of any color. Put an unlock counter on Cryptex. (To collect evidence 3, exile cards with total mana value 3 or greater from your graveyard.)
Sacrifice Cryptex: Surveil 3, then draw three cards. Activate only if Cryptex has five or more unlock counters on it. | Yeong-Hao Han
LSV
Gravestone Strider | Artifact Creature | Golem | {1}: Add one mana of any color. Activate only once each turn.
{2}, Exile Gravestone Strider from your graveyard: Exile target card from a graveyard. | Tom Babbey
2.5 LSV
Lumbering Laundry | Artifact Creature | Golem | {2}: Until end of turn, you may look at face-down creatures you don't control any time.
Disguise {5} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) | Michal Ivan
2 LSV
Magnetic Snuffler | Artifact Creature | Construct | When Magnetic Snuffler enters the battlefield, return target Equipment card from your graveyard to the battlefield attached to Magnetic Snuffler.
Whenever you sacrifice an artifact, put a +1/+1 counter on Magnetic Snuffler. | Daniel Ljunggren
2.5 LSV
Magnifying Glass | Artifact | | {T}: Add {C}.
{4}, {T}: Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") | Paolo Puggioni
1 LSV
Sanitation Automaton | Artifact Creature | Construct | When Sanitation Automaton enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) | Mike Burns
1.5 LSV
Thinking Cap | Artifact | Equipment | Equipped creature gets +1/+2.
Equip Detective {1}
Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.) | Tony Foti
2 LSV
Case of the Shattered Pact | Enchantment | Case | When this Case enters the battlefield, search your library for a basic land card, reveal it, put it into your hand, then shuffle.
To solve — There are five colors among permanents you control. (If unsolved, solve at the beginning of your end step.)
Solved — At the beginning of combat on your turn, target creature you control gains flying, double strike, and vigilance until end of turn. | Peter Polach
2.5 LSV