Pulling teeth, the card, excels because even though we think were looking at an image conceived just to make us feel sick, we may very well just be looking at a correct depiction of the point of view of a dentist from medieval times
At one of the latter stages of casting spells a player defines its total cost: Total cost is a spells mana cost or alternative cost, plus all additional costs, plus all effects that increase mana cost, minus all effects that decrease mana cost
Crux of Fate is a noteworthy card if youre into dragons
It turns non-creature artifacts into creature artifacts, and vice versa
Still though, a sealed booster box of this set will set you back a cool $3,000 and with good reason thanks to notable chase cards such as the eminently powerful ramping tool Grim Monolith, the Squirrel kindred powerhouse Deranged Hermit and artifact recursion machine Goblin Welder
Thats useful in and of itself, and while we went out of our way not to include the Sanguine Bond + Exquisite Blood combo (you should have them both in your deck), having one of those effects on a Creature is useful