Pernicious Deed is the biggest threat to your board. It is an enchantment, so your Naturalize can destroy it directly, but only if you do it before they activate it, because sacrificing the Deed is a cost and you can't respond to it by removing the Deed. Caller of the Claw is the key addition: with flash, you can hold it until after Pernicious Deed resolves and rebuild your board with a 2/2 Bear for each nontoken creature that died this turn. Mogg Fanatic's 1 damage struggles against their mostly 4-toughness-plus threats, making it the easiest cut. Play around Cabal Therapy and try to bait Pernicious Deed low before committing your full hand.