I won! Spamming gifts is busted: if you get a board with a few of them down and then score, they will multiply, it will be your turn again and you're practically guarenteed to have enough on the field to score again after you take it, which will cause it to be your turn on the board with 3 still available and it just gets out of hand... I hit the final boss with 4 scorings in one turn to practically instakill it.
This was a fun one!
Luck I guess, they just kept appearing and I kept taking them. I must have had like 4 of them by the end of things. And I was not really adding that many others and I was taking removals of other dice types.
You can also withhold them in your hand between "restocks" which allows you to have 3 in your hand even if there is only one in your deck.