Rankle, Pitiless Trickster

Flying
Rankle has lifelink and haste as long as an opponent controls no creatures.
When Rankle enters, you may pay 1 life. When you do, each player discards a card and sacrifices a creature.
Whenever a player discards a card, Rankle perpetually gets +1/+0.

Hostile Investigator

When Hostile Investigator enters, target opponent discards a card.
Whenever one or more players discard one or more cards, investigate. This ability triggers only once each turn. (Create a Clue token. It’s an artifact with “, Sacrifice this artifact: Draw a card.”)

Mirage Mesa

Mirage Mesa enters tapped. As it enters, choose a color.
: Add one mana of the chosen color.

Hostile Investigator

When Hostile Investigator enters, target opponent discards a card.
Whenever one or more players discard one or more cards, investigate. This ability triggers only once each turn. (Create a Clue token. It’s an artifact with “, Sacrifice this artifact: Draw a card.”)

Shivan Reef

: Add .
: Add or . Shivan Reef deals 1 damage to you.

This Town Ain’t Big Enough

This spell costs less to cast if it targets a permanent you control.
Return up to two target nonland permanents to their owners’ hands.

Demonic Ruckus

Enchant creature
Enchanted creature gets +1/+1 and has menace and trample.
When Demonic Ruckus is put into a graveyard from the battlefield, draw a card.
Plot (You may pay and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

Hedge Maze

(: Add or .)
Hedge Maze enters tapped.
When Hedge Maze enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Lonis, Cryptozoologist

Whenever another nontoken creature you control enters, investigate.
, Sacrifice X Clues: Target opponent reveals the top X cards of their library. You may put a nonland permanent card with mana value X or less from among them onto the battlefield under your control. That player puts the rest on the bottom of their library in a random order.

Torch the Witness

Torch the Witness deals twice X damage to target creature. If excess damage was dealt to that creature this way, investigate. (Create a Clue token. It’s an artifact with “, Sacrifice this artifact: Draw a card.”)

Mistway Spy

Flying
Disguise (You may cast this card face down for as a 2/2 creature with ward . Turn it face up any time for its disguise cost.)
When Mistway Spy is turned face up, until end of turn, whenever a creature you control deals combat damage to a player, investigate.

Detective’s Satchel

When Detective’s Satchel enters, investigate twice. (To investigate, create a Clue token. It’s an artifact with “, Sacrifice this artifact: Draw a card.”)
: Create a 1/1 colorless Thopter artifact creature token with flying. Activate only if you’ve sacrificed an artifact this turn.

Adrix and Nev, Twincasters

Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)
If one or more tokens would be created under your control, twice that many of those tokens are created instead.

Hedge Maze

(: Add or .)
Hedge Maze enters tapped.
When Hedge Maze enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Agency Outfitter

Flying
When Agency Outfitter enters, you may search your graveyard, hand and/or library for a card named Magnifying Glass and/or a card named Thinking Cap and put them onto the battlefield. If you search your library this way, shuffle.

Torch the Witness

Torch the Witness deals twice X damage to target creature. If excess damage was dealt to that creature this way, investigate. (Create a Clue token. It’s an artifact with “, Sacrifice this artifact: Draw a card.”)

Hedge Maze

(: Add or .)
Hedge Maze enters tapped.
When Hedge Maze enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Dutiful Return

Return up to two target creature cards from your graveyard to your hand.

Murderous Cut

Delve (Each card you exile from your graveyard while casting this spell pays for .)
Destroy target creature.

Volatile Fault

: Add .
, , Sacrifice Volatile Fault: Destroy target nonbasic land an opponent controls. That player may search their library for a basic land card, put it onto the battlefield, then shuffle. You create a Treasure token.