@fsecco I think you mean, “if you are on the play and you fetch, your opponent can guarantee you will lose the bid”.
Opponent might not want to exercise that guarantee because he does not want to forfeit the ability to activate fetchlands or to cast FoW/Misstep/etc. after the wheel.
Yeah, I thought it was clear this was what I meant. The thing is that if you don't pay 19, you give your opponent a chance to just deny you the cards. Depending on what you got left in your hand, that means game over.
Suppose you're playing against a Storm player that dumps his hand (which he needs to do in order to have mana to play anything after Wheel. He plays Wheel with 1 card left in hand after a FoW battle. What do you pay? You may just choose to pay a lot of life just to stop his card and control the game from there. It's your choice.
Also, if you have a good hand with good permition, you may just pay 0 and let this resolve, since you won't have to lose your hand. It's like he's having all the trouble to draw a new hand while you can hold on to your FoW, FoN + Trap and deal with whatever he draws without the " "forced mulligan".
So I think the card has several scenarios in which it's very bad, and I wouldn't be excited to play it too much.