"When X happens" is a trigger, and will trigger once for each X that happens.
Thanks Paul. I had issues with another card (Cerebro I guess) and the solution was quite the same. I'll have to tattoo this sentence on my forearm
Don't blame your English skill - it's poorly worded.
Hmmm yes. That's the sensation I got with some cards. However the game is so enjoyable
Thanks all of you for answering