Hi, got a bit confused here, and want to know how its meant to be played by the RAW.
So:
As far as I know each triggering condition can only trigger one effect for playing OL card. For example: "Play when activating a monster"-Trigger can only be used for one card. No double movement speed AND double attack for your monsters.
Now what about "Play at the start of your turn"? There are power cards AND spawn cards that both use this triggering condition. This would mean, that you can either play a power card OR a spawn card.
Am I missing something?