Mirri fills a niche role, directing combat so concretely, and her Dueling Grounds as a legendary creature design could be the inspiration for more artifact/enchantment turned legends designs in the future
Bloodchief Ascension's first ability checks how much life was lost by each opponent over the course of the entire turn, even if Bloodchief Ascension wasn't on the battlefield the whole time
This card supports the classic go-wide Elves strategy while also turning each elf into a threat
Here are examples of these changes over the last year: All Cephalids became Octopuses All Viashinos became Lizards All Nagas became Snakes Cephalids, Viashinos, and Nagas are all types that never received any sort of typal support, but now that theyve taken on new creature types they have simultaneously gained access to new support while expanding the number of creatures with their new typing
Affinity is the most common means to this end, but reanimator cards will also get the job done quite nicely, often netting you additional value along the way