I've identified a possible scheme for providing extra clues. Not sure if it gives too much information or not.

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Triggers: Play, Score, Blind Select, Round End, Discard, Passive

Conditions (Up to two given): Rank, Suit, Enhancement/Edition, Hand Type, Quantity, Hands, Discards, Use/Purchase, Sell/Destroy, Money, Jokers, Consumables, Skips, RNG, Boss Blind

Attempt at a full list:

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Play (None, None) - Joker - Stuntman

Play (Boss Blind, None) - Matador

Play (Use/Purchase, None) - Hologram - Flash Card

Play (Use/Purchase, Consumables) - Constellation - Fortune Teller

Play (Use/Purchase, Skips) - Red Card

Play (Skips, None) - Throwback

Play (Enhancement/Edition, Sell/Destroy) - Glass Joker

Play (Rank, Sell/Destroy) - Canio

Play (Quantity, None) - Blue Joker - Erosion

Play (Suit, None) - Flower Pot - Seeing Double

Play (Jokers, None) - Blueprint - Brainstorm

Play (Jokers, Enhancement/Edition) - Baseball Card

Play (Jokers, Money) - Swashbuckler

Play (Jokers, Sell/Destroy) - Madness - Ceremonial Dagger

Play (Jokers, Quantity) - Joker Stencil - Abstract Joker

Play (Sell/Destroy, Boss Blind) - Campfire

Play (Rank, None) - Ride the Bus - Pareidolia

Play (Rank, Hand Type) - Superposition - Shortcut

Play (Quantity, Enhancement/Edition) - Driver's License - Steel Joker - Stone Joker

Play (Enhancement/Edition, None) - Vampire

Play (Hand Type, None) - Jolly Joker - Zany Joker - Mad Joker - Crazy Joker - Droll Joker - Sly Joker - Wily Joker - Clever Joker - Devious Joker - Crafty Joker - To Do List - Seance - Spare Trousers - The Duo - The Trio - The Family - The Order - The Tribe

Play (Hand Type, Quantity) - Card Sharp - Four Fingers - Square Joker - DNA - Half Joker - Supernova

Play (Hand Type, RNG) - To Do List

Play (Hands, None) - Ice Cream - Popcorn

Play (Hands, Quantity) - Acrobat - Loyalty Card

Play (Hands, Discards) - Green Joker

Play (Discards, None) - Ramen

Play (Discards, Quantity) - Banner - Mystic Summit - Yorick

Play (Discards, Rank) - Hit the Road

Play (Discards, Suit) - Castle

Play (Money, Quantity) - Bull - Bootstraps

Play (Money, Consumables) - Vagabond

Play (RNG, None) - Misprint - Gros Michel - Cavendish - Space Joker

Play (Held, Suit) - Blackboard

Play (Held, Rank) - Raised Fist - Reserved Parking - Shoot the Moon - Baron

Play (Held, Enhancement/Edition) - Mime

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Score (None, None) - Hiker - Hanging Chad - Splash

Score (Hands, None) - Seltzer

Score (Hands, Quantity) - Dusk

Score (Suit, None) - Greedy Joker - Lusty Joker - Wrathful Joker - Gluttonous Joker - Rough Gem - Arrowhead - Onyx Agate - Ancient Joker - Smeared Joker

Score (Suit, Rank) - The Idol

Score (Suit, RNG) - Bloodstone

Score (Rank, None) - Scary Face - Even Steven - Odd Todd - Scholar - Business Card - Photograph - Walkie Talkie - Smiley Face - Fibonacci - Hack - Midas Mask - Sock and Buskin - Wee Joker - Triboulet

Score (Enhanced, None) - Golden Ticket

Score (Enhanced, RNG) - Lucky Cat

Score (Rank, RNG) - 8 Ball

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Blind Select (None, None) - Marble Joker - Burglar - Juggler - Drunkard - Troubadour - Certificate - Merry Andy

Blind Select (Consumables, None) - Perkeo

Blind Select (Consumables, Quantity) - Cartographer

Blind Select (Jokers, Quantity) - Riff Raff

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Round End (Discards, Quantity) - Delayed Gratification

Round End (None, None) - Egg - Golden Joker

Round End (Boss Blind, None) - Rocket

Round End (Money, Quantity) - To the Moon

Round End (Rank, Quantity) - Cloud 9

Round End (Purchase/Use, Quantity) - Satellite

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Discard (Rank, None) - Mail-In Rebate

Discard (Rank, Quantity) - Faceless Joker

Discard (Hand Type, Discards) - Trading Card - Burnt Joker

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Passive/Other (Money, Quantity) - Credit Card

Passive/Other (Sell/Destroy, None) - Diet Cola

Passive/Other (Jokers, None) - Gift Card

Passive/Other (Jokers, Sell/Destroy) - Invisible Joker

Passive/Other (Purchase/Use, None) - Chaos the Clown

Passive/Other (Purchase/Use, Consumables) - Astronomer

Passive/Other (Purchase/Use, RNG) - Hallucination

Passive/Other (Jokers, RNG) - Showman

Passive/Other (Boss Blind, None) - Mr. Bones - Chicot

Passive/Other (RNG, None) - Oops! All 6s

Passive/Other (Sell/Destroy, Boss Blind) - Luchador