B C Z
In the rulebook it states the following:
Finally, unless it specifically states otherwise, a Feature can only be activated once within the indicated time frame; i.e., once a turn, once a Scene, and so on.” (See Timing, p. 25, Dragonfire Rulebook.)
So the following feature only can be activated once per turn.
Minor Conjuration: Once per turn: Exchange 2 COLORLESS for BLACK or RED.
For the following features, if I'm understanding this correctly they can be activated any number of times during my turn?
Weapon Bond: During your turn, discard any one BLUE card to draw one card.
Sneak Attack: During your turn, discard a card to deal RED.
I believe that all of those Features are intended to be only once per turn.