Hearthpwn

Congrats on the win Toble.

Yay!  Been trying for a very long time.  Thanks everyone who voted!

Quote from FllR >>

Removing cards from your deck is not a cost, unless you reach fatigue in that game (statistically, it makes no difference to draw from the top or bottom of the deck). (Un?)fortunately, fatigue can be completely avoided as long as You manage to keep a single copy of Jade Idol around. I might be wrong (after all I have no way of testing it out), but to me this card looks way stronger than Shadow Visions, which is already a very competive card. Considering the general power level of druids this would be a scary card to "print".

Congratulations Toble! You finally got that sweet shiny border!

Quote from FllR >>

Quote from nurgling13 >>

Quote from FllR >>

Removing cards from your deck is not a cost, unless you reach fatigue in that game (statistically, it makes no difference to draw from the top or bottom of the deck). (Un?)fortunately, fatigue can be completely avoided as long as You manage to keep a single copy of Jade Idol around. I might be wrong (after all I have no way of testing it out), but to me this card looks way stronger than Shadow Visions, which is already a very competive card. Considering the general power level of druids this would be a scary card to "print".

 It depends on the deck. If you get rid of a card you really need (i.e. in a combo-based deck), it can lose you the game. Also, assuming a Druid deck will have Jade Idol is a bad assumption. This is a mistake a lot of people make in designing cards, in that they only look at them through the lens of the current meta. Jade Idol isn't even going to be in Standard forever, so even assuming it will always be overly dominant necessitates considering Druid decks without it. Creating cards should not just be a reaction to what is happening in the meta. 

Since the discards happen by choice and not randomly, You won't rid yourself of cards you really need. Instead, You can simply choose to keep them, which would be advantageous for a combo deck, because then, the combo happens faster. (In aggro matchups, You might even decide You don't need your combo to win and search for a Spreading Plague or some other defensive option.)

Quote from FllR >>

Quote from nurgling13 >>

No, that's not really how that works, and that doesn't make it better than Shadow Visions. With Shadow Visions, you can search for what you need right now. With Toble's card, if you need card X now, but you drew card Y that you need later, you have to make a choice between benefit now and not throwing out a card you will need later. Plus, you don't even know what your other options are with Toble's card, unlike Shadow Visions. If you end up throwing out card Y in your quest to find card X, you might draw card Z, that you also need later. Then you have to make the same choice, not knowing how many cards it will take to draw card X. You're minimizing the tradeoff here.

 Indeed i was simplifying the scenario. Since you seem to be interested, here's a slightly longer version:

Given: You are playing a deck that contains one or more card(s) X, which you must draw at some point in order to win the game (e.g. a quintessential combo piece). You are currently in a situation where you would like to have card A (e.g. some removal, because your opponent played a dangerous threat last turn). You play Selective Harvest. One of the follwing things may happen:

1. You encounter card B, which is not what you were looking for. It is also not required to win the game. You choose to discard it and the cycle continues. This is outcome is good for you, since you reduced the number of unneccessary cards in your deck, thus increasing your odds of drawing the cards you need in future turns.

2. You encounter card A, the card you were looking for. Obviously, you keep it. Needless to say, this outcome is good for you.

3. You encounter X. Now, you have to keep card X (otherwise you can't win). Getting card X is still very useful to you, even though you would have preferred to draw it later.

None of the potential outcomes is 'bad'. You might not get A, but even Shadow Visions does not guarantee getting A (Depending on the deck, the odds may vary). To me it is quite clear, that there is no balancing drawback. Instead you get the upside of thinning your deck of a potentially large number of cards B in the process of getting to whatever card you ultimately keep. This upside might be huge for some specific combo decks.

If I got something wrong in my scenario, or you want to go further into detail, please feel free to tell me.