Some _rough ideas_ for Keyword Chromatic/Token-cards (I'll call it X in these examples):
Mirror of life (Uncommon) - 6BGR
X, Holy, Alliance
Tower +N
Wall +2N
Mode 1: Next card received will be a Holy card, N = # of Holy cards in game + # of Keywords in enemy hand
Mode 2: Next card received will be an Alliance card, N = # of Alliance cards in game + # of Keywords in enemy hand
Cheap token (Common) - 0
X, Quick
Stock -2
Hoax (Common) - 1BGR
X
If last card played by opponent was a common card, reverse damage dealt last turn (up to N)
Bricks: -2
N = # of Keywords in your hand (max 8)
Impostor (Rare) - 12BGR
X
Discards a random non-common card in enemy hand of chosen Keyword
If none found, discard all common cards with chosen Keyword from enemy hand
Gain 100 tokens from each Keyword of the discarded card(s)
Mode 1: Alliance
Mode 2: Barbarian
Mode 3: Brigand
Mode 4: Beast
Mode 5: Burning
Mode 6: Mage
Mode 7: Soldier
Mode 8: Unliving
Keepsake (Uncommon) - 4BGR
X, Brigand, Soldier
No effect if New
N = #of Keepsake in players hand
Mode 1: If there is a Keepsake in enemy hand, next card received will be a non-common card from players deck
Mode 2: If N>2, next card received will be a non-common Brigand card from players deck
Mode 3: If N>2, next card received will be a non-common Soldier card from players deck
Rainbow hunters (Uncommon) - 13G
X, Alliance
If # of Keywords in players hand <2 (not counting this one), next card received will be Rainbow Dragon
Else:
Production X2