Star Lord: 1) Star-Lord’s first hero ability says “Each ally you control gains the Guardian trait”. How does this…

Question

1) Star-Lord’s first hero ability says “Each ally you control gains the Guardian trait”. How does this interact with the basic support card Knowhere?

2) Star-Lord’s first hero ability says each Guardian you control gains the Guardian trait. Do his allies lose the Guardian trait if he goes alter-ego and thus no longer have the constant ability that says they gain the trait affecting them?

3) Star-Lord’s second hero ability is called “What could go wrong?” and effectively discounts a card in return for the player taking an encounter card. According to the Rules Reference 1.4, you must pay the cost of a card before a card “commences being played.” In other words, rules as written, you can only use Star-Lord’s ability to reduce the cost after having already paid the cost anyway to get it to the point it’s valid to trigger said ability. We assume it’s meant to say something along the lines of: “Interrupt: When paying for a card from your hand, deal yourself 1 facedown encounter card -> Reduce the cost to play that card by 3.” Is that correct?

Answer