This mythic rare has been one of my favorites in the set since its release. Considering that it’s been played in 1800+ Commander decks (according to EDHREC), apparently I was right to like one of the best Clone variants ever printed. For 2UU, you can copy any nonland permanent on the battlefield. In a new Standard where tons of big creatures are probably going to be flung around, the Impersonator at the very least will be a sideboard option to have a cheap answer. Even if Clever Impersonator ends up not seeing tons of Standard play, the Commander demand is definitely there. Foils are already $10-12, so while the non-foils probably won’t appreciate as quickly unless competitive demand fuels a supply shortage, there’s pretty much no money at all to lose here.
This 4 drop removal spell does see Standard play in Mardu Dragons, but with Hero’s Downfall rotating out of Standard, this is the next best thing at Instant speed to deal with problem creatures and planeswalkers. Its price ceiling is held down by the existence of a full art Game Day foil, but like Clever Impersonator, Utter End sees a ton of Commander play (1000+ decks). Being that it can exile any nonland permanent helps get around any indestructibility, too. While it’s not quite Vindicate, 1BW to destroy any permanent, adding the Instant speed and replacing the destruction with exile may still keep this Constructed worthy. Again, as a dollar rare, it’s pretty much impossible to lose money here. The Game Day foil at $3-4 may be worth looking at, as well, as this is the version most targeted by Commander players. The set foil is barely $3, either. It’s not impossible for this to become one of the premier removal cards in the format for some period of time. Either way, you can’t really lose with its Commander playability keeping it above bulk status.
This is yet another mythic rare that just needs to see a bit of competitive play to become a really nice sleeper. It’s not quite as much of a Commander hit as Clever Impersonator and Utter End, but in the right deck it’s pretty sweet. We know how good getting X tokens for X +1/+1 counters can be - see Hangarback Walker. While obviously not as splashable as the Walker, it doesn’t take much of a mana investment for this to be good. Plus if it enters as a Morph, it gets an additional 5 +1/+1 counters when it’s flipped face-up. The best case scenario for this Hydra is probably that a Mastery of the Unseen deck emerges that can manifest it and flip it for GG, getting a 5/5. Again, the Hydra will always at least replace itself and it seems like a good candidate for Hardened Scales decks. Of the three cards here, the Hooded Hydra probably holds the greatest risk. But even foils are only $3. There is potential this card is a total dud, but the power level seems there for at least one crazy spike in its lifetime, and it is definitely a Commander playable.
These are easily the most obvious investments for me in Khans of Tarkir that aren’t tri-lands, tap lands or fetch-lands. It’s probably likely all three of these will at least double in price during their time in Standard, and perhaps even more. Whatever the case, you won’t be stuck with much of a loss, if any, if these don’t make a move in competitive play.