Unless this card becomes ridiculously expensive, which I doubt, I plan to play it, and in mono-blue
Thats the vibe
Thats true for Quick Shot too, which is one of just two cards in the deck that draw without a discard
The main difference between these two Kozileks is that generic mana can be paid by mana of any color , including colorless, while colorless mana costs can only be paid for with colorless mana as if it was a sixth color in the color pie
Lets say I see your hand of Arc Trail and Vindicate, I will obviously take the Arc Trail and you will then be forced into Vindicating the 1/1 at a tempo loss if you want your Arc Trail
Eureka and Show and Tell are classic examples, whereas Braids, Conjurer Adept is a blue commander with this entire focus in mind