Taigam, Master Opportunist

If the spell that’s copied has an X whose value was determined as it was cast, the copy will have the same value of X.

When the last time counter is removed, the second triggered ability of suspend (the one that lets you cast the card) triggers. It doesn’t matter why the last time counter was removed or what effect removed it.

As the second triggered ability of suspend resolves, you may cast the card. Timing permissions based on the card’s type are ignored. If you choose not to (or can’t) cast the card, it remains exiled with no time counters on it, and it’s no longer suspended.

Suspend is a keyword that represents three abilities. The first is a static ability that allows you to exile the card from your hand with the specified number of time counters (the number before the dash) on it by paying its suspend cost (listed after the dash). The second is a triggered ability that removes a time counter from the suspended card at the beginning of each of your upkeeps. The third is a triggered ability that gives you the option to cast the card when the last time counter is removed. Note that if a card is exiled and then “gains suspend,” only the two triggered abilities are relevant.

A resolving copy of a permanent spell becomes a token. That token isn’t “created” and won’t interact with abilities that care about tokens being created.

You can’t choose to pay any additional costs for the copy. However, effects based on any additional costs that were paid for the original spell are copied as though those same costs were paid for the copy too.