In addition to costs, all Nullshapers cards (except anomalies) have speeds that determines when it can be played or activated. Activated skills also have speeds. A card’s speed is indicated by it’s number of speed symbol.
Speed level 1 icon

Speed Level 1

Can ONLY be played or activated during each player’s own turn.Can ONLY be played or activated during the primary phase.Can NOT be played or activated to answer any actions.
Speed level 2 icon

Speed Level 2

Can ONLY be played or activated during the primary phase or battle phase.Can ONLY be played or activated to answer
speed1
 or
speed2
 actions.
Speed level 3 icon

Speed Level 3

Can be played or activated at ANY time on ANY turn.Can be played or activated to answer actions of ANY speed.