At six mana (three colorless, one each blue, black, and red), he's a little more expensive than other Commanders you're likely to encounter, but he brings excellent value and staying power to your battlefield
Honestly, Ive learned over the past few years not to underestimate cards from this guild
Soul Warden immediately becomes the best source of repeatable lifegain in the format, making it the perfect way to power up Ajani's Pridemate

1 Counter Shield 3 Dragonic Disorder Warrior-Type Deck Featuring Millennium Shield 3 Semeruler the Dark Devastator 1 Yamiruler the Dark Delayer 1 Kimeruler the Dark Devestator 1 Royal Demons No Wave 1 Dayu Ahez the Ys Mirror King of Chairs 1 Matsugumi of the Dark Division 1 Takegumi of the Dark Division 1 Millennium Shield (LEGEND) 3 Hero of the Yeast 3 Masaki the Legendary Samurai General 1 Forbidding Warrior 1 Onmyou Warrior Sakakaze 3 Horn Wan Yue the Crescent Music Maiden 1 Dwell Chair Massage 3 Dwell Chair Saber 2 Babysitter Goat 3 Soul of Death Reversal 2 Dark Current 2 Avian Spell Strategy 2 Sword & Shield 1 Dark Deadly Duel 1 Dark Dance 1 Bowing of the Graying Gauze Guild 1 Essence of the Hermit Psychic-Type Deck Featuring Giftaurist 3 Giftaurist 1 Prima Guitarna the Shining Superstar 1 Esperaid the Smashing Superstar 1 CAN-Re:D 1 Royal Demons Heavymetal 3 Berrysist 1 Peace Holder 1 Silent Assassin 1 Future Diviner 2 Amusi Performer 2 Speedi Performer 2 Dreamrummer 3 Catchy Boardist 3 Elengel 2 Elekiss 3 Romance Pick 1 CAN:D 1 Monster Reborn (LEGEND) 3 JAM:P Set

The Reality Chip is a fun option that's both an artifact creature and an equipment, but opens the next card in your library up to be used and cast.
Flying Creatures with flying cant be blocked except by other creatures with flying (or reach, but this is the evasion article, not the How do I stop evasive creatures article)