Gold Nuggets

From BoardGameGeek:

In Gold Nuggets you are collecting gold from streams and rivers - as well as from the other players! On your turn, roll 7 dice (sides: gold nugget, lasso, 2, 3, 4, 5). Then do the following: a) Roll again, but before that, freeze at least one die: - one or more lassoes, and/or - one or more gold nuggets, and/or - three or more numbered dice showing the same number. When 3 or more numbered dice are already frozen, you can freeze further dice (1 or more) of that number after the subsequent rolls. b) If you can't freeze any dice, you can't take any gold nuggets and your turn ends. c) If you decide to take the gold nuggets, you receive the following: - 1 nugget for each die showing gold nuggets, and/or - 2/3/4/5 nuggets for 3 or more dice showing the numbers 2/3/4/5, and/or - if you have 3 lassoes, you can take gold nuggets from other players instead of taking it from the common stock. If you managed to use all seven dice then you get to take another turn! Once all the gold nuggets are gone from the middle, the game ends. The player with the most gold nuggets wins!