A similar twist to Slave Auction, providing a creature for cannon-fodder–ness but only sometimes being tactically useful.

Oh, hey, that's a good idea. It's probably too cheap (considering that your next best option is Enslave), but that can be changed. By the way... how come no one's offered reprinting Enslave yet? Too obvious?

Thank you. Good point about Enslave, it fits the flavour perfectly, it should be in provisionally.

Costing needs playtesting. I think getting the worst creature, rather than eliminating their best, is considerably worse, but I don't know for sure and I don't know how often you'll hit something giant anyway. Like Slave Auction, I really liked the "mean" flavour, it'd be nice if we can keep the feel without overpowering the card -- after all, taxing you for being in the same room is very black :)

I just know that if your opponent sacs a Sakura-Tribe Elder into a round three Thrun, the Last Troll and you followed up with this, there'd be a lot of swearing. Whether that's fair or not, though, is a development issue... but there will be times when this card is much better than Mind Control. Just saying.

Another comparison might be Tribute to Hunger or Cruel Edict. That suggests sometimes Thrun will indeed just get screwed by a timely uncommon. Although this is obviously somewhat more swingy.