Card Draw Mulldrifter, a 2/2 flier that you can cast as a Divination or a five-mana creature that also draws you cards
In this case, all five are cheap, common-rarity creatures with an ability tied to one of Tarkirs three-color clans, and another that allows you to turn mana into a color from that clan
This copy effect ends up being expensive to use in comparison to the other options that this deck has, and was later replaced for cards that create a ton of value with the final gameplan that was landed on
While not a board wipe card, it did shake things up, especially if you waited until you had one card (this one) and your opponent still had a handful
But even if you don't do unfair stuff, being able to make a second copy of any of your enchantments for is so good
Rise of the Dark Realms Commander decks generally want big, splashy finishers