Like most Magic: The Gathering cards, the value of Exsanguinate depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Foundations)
Sure, it's still counterable, unlike Akroma, Angel of Fury, and sure, first strike and trample are kind of overkill on a creature that already has evasion from flying, but Timmy players get their kicks out of reading the 12-word essay that is Akromas text box
Ondu Spiritdancer is a bit like a Doubling Season for your enchantments (more on that card later) and has a chance of keeping something like its current tag of $30.00
While these may be some of the most effective options for keeping Treasures in check, they wont always be appreciated
Fun fact: internally, we referred to this issue as the "Thalia Problem"
Machop and Machoke are both supposed to be grey, and Machamp is supposed to be blueish-grey