Circle Far and Wide allows you to draw a card every time your opponent does while Diablo is exerted, making Diablo, Devoted Herald a formidable bird to be dealing with
After all, a 2/2 Cyberman with no abilities doesnt pose much of a threat on its own

Advanced Search Sets Random Syntax Ahn-Crop Invader Airdrop Condor Akki Avalanchers Alpine Guide Ancestors' Aid Ancient Hydra Arc Runner Arms Dealer Arterial Alchemy Artillerize Aspiring Champion Atog Audacious Reshapers Audacious Swap Avalanche Riders Awaken the Sky Tyrant Axgard Artisan Balduvian Horde Ball Lightning Barbarian Lunatic Barbarian Outcast Barbarian Riftcutter Barrage Ogre Barrage Tyrant Barrage of Expendables Basalt Gargoyle Belligerent Guest Betrayer's Bargain Betrothed of Fire Blazing Bomb Blistering Firecat Blockbuster Blood Aspirant Blood Hypnotist Blood Petal Celebrant Blood Rites Bloodboil Sorcerer Bloodfire Colossus Bloodfire Dwarf Bloodfire Infusion Bloodfire Kavu Bloodpyre Elemental Bloodshot Cyclops Bloody Betrayal Blooming Blast Bogardan Dragonheart Boggart Arsonists Boggart Forager Boilerbilges Ripper Book of Mazarbul Boomstacker Boulder Jockey (playtest) Brand of Ill Omen Brazen Freebooter Breath of Fury Breya's Apprentice Broadside Bombardiers Brood Birthing Cacophony Scamp Calamity, Galloping Inferno Caldera Hellion Call of the Full Moon Callous Sell-Sword Case of the Burning Masks Catalyst Elemental Chained Brute Chandra, Acolyte of Flame Chandra, Flameshaper Chandra, Spark Hunter Changeling Berserker Chicken Egg Choreographed Sparks

Whats more, there are some pretty common threads in terms of colour identity
Yuna, Grand Summoner One of the main characters of FFX and the love interest of TidusTidus, Yuna is an extremely vital figure in the FFX canon
The Mirror Breaker has fallen off in Modern and other competitive formats, but its still a favorite in Commander decks