Dies to Removal

How do you guys feel about Crackling Doom versus Hero's Downfall? Do you think the damage is a worthwhile tradeoff for the lack of choice?

Hello! New here. Started playing casual at Revised, left around Mirage, then started again at M14. This time around I'm looking to compete in tournaments.

I'm currently looking at Mardu/Butcher builds. Looking forward to reading and posting.