
Compelling Deterrence | Instant | | Return target nonland permanent to its owner's hand. Then that player discards a card if you control a Zombie. | Seb McKinnon

Daring Sleuth | Creature | Human Rogue | When you sacrifice a Clue, transform Daring Sleuth. | Seb McKinnon

Erdwal Illuminator | Creature | Spirit | Flying
Whenever you investigate for the first time each turn, investigate an additional time. | Seb McKinnon

Furtive Homunculus | Creature | Homunculus | Skulk (This creature can't be blocked by creatures with greater power.) | Wayne Reynolds

Ghostly Wings | Enchantment | Aura | Enchant creature
Enchanted creature gets +1/+1 and has flying.
Discard a card: Return enchanted creature to its owner's hand. | Josu Hernaiz

Jace's Scrutiny | Instant | | Target creature gets -4/-0 until end of turn.
Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") | Slawomir Maniak

Just the Wind | Instant | | Return target creature to its owner's hand.
Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.) | Christopher Moeller

Manic Scribe | Creature | Human Wizard | When Manic Scribe enters the battlefield, each opponent mills three cards.
Delirium — At the beginning of each opponent's upkeep, if there are four or more card types among cards in your graveyard, that player mills three cards. | Matt Stewart

Nagging Thoughts | Sorcery | | Look at the top two cards of your library. Put one of them into your hand and the other into your graveyard.
Madness {1}{U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.) | Seb McKinnon

Ongoing Investigation | Enchantment | | Whenever one or more creatures you control deal combat damage to a player, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")
{1}{G}, Exile a creature card from your graveyard: Investigate. You gain 2 life. | Bud Cook

Press for Answers | Sorcery | | Tap target creature. It doesn't untap during its controller's next untap step.
Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") | Steve Prescott

Rattlechains | Creature | Spirit | Flash
Flying
When Rattlechains enters the battlefield, target Spirit gains hexproof until end of turn.
You may cast Spirit spells as though they had flash. | Lius Lasahido

Seagraf Skaab | Creature | Zombie | | Jama Jurabaev

Thing in the Ice // Awoken Horror | Creature // Creature | Horror // Kraken Horror | Defender
Thing in the Ice enters with four ice counters on it.
Whenever you cast an instant or sorcery spell, remove an ice counter from Thing in the Ice. Then if it has no ice counters on it, transform it. // When this creature transforms into Awoken Horror, return all non-Horror creatures to their owners' hands. | Svetlin Velinov

Vessel of Paramnesia | Enchantment | | {U}, Sacrifice Vessel of Paramnesia: Target player mills three cards. Draw a card. | Kieran Yanner