It doesn't destroy anything, so it's kinda sorta less effective than Demolition Field, but is also more inherently card advantageous than Volatile Fault
I am largely evaluating this not worrying about the mana value 4 or greater part
At the end of the day, it taps to basically draw a card and enable your synergy packageyou can't ask for much more
For example, a persist creature like Putrid Goblin, First Day of Class, and a free sacrifice outlet let you sacrifice the Goblin as many times as you like
My initial take on the mechanic was for it to be an instant or sorcery, but you could pay mana to turn it into a creature
I actually like a lot of the different Doctors from these decks, even though none of them are in my top 10