The Ozolith
The Ozolith's trigger says may transfer the counters to a creature, and yet it forces you to choose a creature even if you don't have any, leading to an opponent's creature having to be selected, leading to game losses.

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Exosyzygy#84549 commented
This just happened to me too. The other player was attacking me with creatures and it found them as valid targets but I did not have any creatures and it would not allow me to submit zero targets. The card says that you may move the counters not that you have to move the counters so you should be able to submit zero targets.
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Richnprayer#69065 commented
Same, I lost a game to an opponent who was down to 1 health. Because I had to place the counters on the opponents creature, because I didnt have a creature on the battlefield.
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Nope#07805 commented
This happened to me as well.
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vilation#79748 commented
There is no decline option when this triggers. Playing in standard ranked. I had to let my timers run out for it to not force me to put it onto an opponent's creature. I'm sure it ****** him off pretty well.
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tinyau#58602 commented
Same problem here.
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CoolieG#10116 commented
Thanks Kenneth, that's good to know.
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onitzerk#21815 commented
The ozolith doesn't allow me the submit 0 option when I don't have creatures on the battlefield and i have counters on it
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Karmakaze#84795 commented
KennethRobertsMusic, I didn't have the decline option appear when I had no creatures on my side of the battlefield.
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Zolf#46831 commented
Had the same issue. Clearly bugged, messed up a draft game.
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Mottabadass#27268 commented
I had the same problem
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KennethRobertsMusic#22266 commented
Okay, I have come back to edit this. The card functions normally. It says you can put tokens on "target creature" which could be your opponents as well. If you don't have any creatures then the only creatures the card can target would be your opponents, so just click on one, but then choose "Decline". The tokens will stay on the Ozolith card. I freaked out when it looked like it was going to force me to put the tokens on my opponents creature and I was already almost dead so I just conceded. Thought about it more and realized there was that second step where you get to decline. Tried it out again and it functions the way I described here, which is perfectly normal. There is no problem with the card after all.