It makes it a different card, and when decks have good reason to both be in these colors and look for good men, the Monk will be here
"Kicker [cost]" means "You may pay an additional [cost] as you cast this spell." If a spell's kicker cost was paid, the spell is "kicked." The kicker ability doesn't let you pay a kicker cost more than once
Even if you can counter the trigger with Voidslime they get an Eldrazi, which no one wants
I didnt find anything really negative to say about this site
The only archetype so far that seems to heavily struggle with Neo Exdeath due to the lack of answers is Mono Ice, which however can at least implement more discard, making Cid Aulstyne more consistent
Farideh, Devil's Chosen is also an interesting payoff, allowing you to draw a card whenever you roll a 10 or greater (the base die is usually a d20, mind you)