Secrets of Paradise

Hidden agenda (Start the game with this conspiracy face down in the command zone and secretly choose a card name. You may turn this conspiracy face up any time and reveal that name.)
Creatures you control with the chosen name have "{T}: Add one mana of any color."

Brago's Favor

Hidden agenda (Start the game with this conspiracy face down in the command zone and secretly choose a card name. You may turn this conspiracy face up any time and reveal that name.)
Spells with the chosen name you cast cost {1} less to cast.

Unexpected Potential

Hidden agenda (Start the game with this conspiracy face down in the command zone and secretly choose a card name. You may turn this conspiracy face up any time and reveal that name.)
You may spend mana as though it were mana of any color to cast spells with the chosen name.