No I don't and as I said that's my personal tips, you can take it or not is none of my business.I merely state a way that it work for me, so if you don't have any other way you may want to use it, no one ever force you to do it and if you think that you can force someone to follow your own idea then that's is the retarded one.
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Then if you play the game rationally and you still get nothing, pls don't come and whine since you don't want to sacrifice anything and yet want it all.Why do you say rationally when it's clearly a gamble, anyway(and a double one at that as well, you can have 10+ copies and still can't reach further than CR-1/SU+1)?