The fact that regeneration is possible is a double edged sword that often benefited the player using the Deed because it let them regenerate their Spiritmongers
+2/+1 is a pretty big buff in a deck that likes to go wide with Zombie tokens, so this slots right into EDH typal decks led by Wilhelt, the Rotcleaver, The Scarab God, and Varina, Lich Queen, among others
1 African Swallow / European Swallow Birds Of Paradise Birds of Paradise gets not one, but two reprints with new arts - African Swallow and European Swallow

Arcades, the Strategist Archers of Qarsi Archers' Parapet Assault Formation Atla Palani, Nest Tender Axebane Guardian Bamboo Grove Archer Bristlepack Sentry Carnivorous Plant Carven Caryatid Dormant Sliver Drowsing Tyrannodon Felothar the Steadfast Floriferous Vinewall Gatecreeper Vine Glade Watcher Grappling Sundew Grave Bramble Hornet Nest Infested Roothold Jaddi Offshoot Jungle Barrier Jungle Patrol Krotiq Nestguard Lure Mindbender Spores Overgrown Arch Overgrown Battlement Platypus-Bear Portcullis Vine Rampart Architect Rouse the Swarm Saruli Caretaker Scuttlegator Sparring Dummy Sporocyst Sprouting Phytohydra Sylvan Caryatid Territorial Witchstalker Thallid Shell-Dweller The Fantastic Four The Pride of Hull Clade Tinder Wall Towering Titan Traproot Kami Tree of Redemption Trestle Troll Ulvenwald Captive Vine Trellis Wall Crawl Wall of Blossoms Wall of Brambles Wall of Ice Wall of Mulch Wall of Pine Needles Wall of Roots Wall of Vines Wall of Wood Welcome to

How many mythic rares should a deck include