Flying You can tap any four untapped artifacts, creatures, and/or lands you control, including creatures you haven't controlled continuously since the beginning of your most recent turn, to pay the additional cost to cast Guardian of the Great Door
Felix really rewards you for slipping in more evasion in your deck
The only cards from the list above that had their characters reprinted in other sets are Baron Sengir and Eron, which were last seen in MTG sets Commander Legends (2020) and Time Spiral (2006), respectively
Throw in the very likely scenario of you hitting with a 4-power lifelinker and those spells you stashed in your deck for Sunforger might just come for free
Junji, the Midnight Sky Unlike many of the other divine dragons, Kokusho didn't die during the Kami War, but was killed decades afterwards guarding the denizens of Takenuma against an oni attack
Creatures with deathtouch like Baleful Strix are a great choice since they heavily discourage otherwise powerful attackers that opponents wont want to die