Flash
When Station Seven Host enters the battlefield, if you cast it, copy target instant or sorcery spell you control. You may choose new targets for the copy.
Undercover

Destroy target artifact or land.
Undercover

Haste
{1}{R}: Threatening Officer gets +2/+0 until end of turn.

Accomplice
Whenever Torch Singer becomes an accomplice, gain control of target creature until end of turn. Tap it. It's attacking.

This spell costs {2} less to cast if you've disturbed the peace this turn.
Exile the top three cards of your library. Until the end of your next turn, you may play those cards.

Target creature gets +3/+3 and gains trample until end of turn.

First strike
Players can't gain life.
Whenever a player casts a spell from a graveyard or exile or activates an ability of a card in a graveyard or exile, Vigilante Firebug deals 2 damage to that player.

Exile the top X cards of your library. When you do, choose one —
• Until the end of your next turn, you may play cards exiled this way.
• Villain's Gambit deals damage to any target equal to the number of cards exiled by Villain's Gambit.

This spell costs {2} less to cast if you've disturbed the peace this turn.
Violent Discharge deals 3 damage to any target.

{T}: Add {R}. Spend this mana only to cast a face-down creature spell.

Whenever a face-down creature you control deals combat damage to an opponent, you may exile it, then cast it without paying its mana cost.
{2}{R}{R}: Put a card from your hand onto the battlefield face down.

When Alluring Spirit enters the battlefield, put a +1/+1 counter on target face-down creature you control.
Each face-down creature you control enters the battlefield with an additional +1/+1 counter on it.

When Bizarre Menagerie enters the battlefield, create a 4/4 green Mutant creature token.
{6}{G}{G}: Create a 4/4 green Mutant creature token.

Destroy target creature with flying.

Put target artifact or enchantment on the bottom of its owner's library.

Look at the top four cards of your library. You may reveal a creature or land card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

You gain 6 life.
Undercover

Accomplice
Whenever Dust Smugglers becomes an accomplice, the creature it accompliced gets +1/+1 until end of turn.

Target creature gets +5/+5, gains trample, and becomes a Horror in addition to its other creature types until end of turn. It can't be blocked by more than one creature this turn.

Target creature you control gets +1/+2 until end of turn. It fights target creature you don't control.

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
Investigate.

Whenever one or more creatures you control deal combat damage to an opponent, investigate.
Whenever you sacrifice a Clue, put a +1/+1 counter on target creature.

Whenever you sacrifice a noncreature permanent, create a 1/1 green Detective creature token. This ability triggers no more than twice each turn.

When Investi-Gator enters the battlefield, investigate.
Investi-Gator gets +1/+1 for each card in your hand.

Whenever another creature you control becomes the target of a spell or ability an opponent controls, investigate.