If you roll multiple 6s, Goblin Blastronauts’s ability will trigger for each 6 you rolled, allowing you to copy the spell or ability that caused the die roll that many times. (Attraction visits always include only a single die roll.)

If you copy a spell or ability, the spell or ability will include instructions to roll more dice. You don’t automatically carry the 6 from the original roll over to the copy. On the plus side, this gives you the chance to roll more 6s!

Activated and triggered abilities can be copied. Other abilities can’t. If the roll happened because of a replacement effect as part of a static ability (for example, the ability that sets Vedalken Squirrel-Whacker’s base power and toughness), that ability isn’t copied. Mana abilities also can’t be copied.

If you copy an Attraction visit, roll another six-sided die and visit Attractions based on the result as you normally would. If you roll another 6, that will trigger Goblin Blastronauts’s last ability again, which can let you roll another 6. You can keep visiting Attractions this way until your luck runs out or you get sick of the rides.