Just like all Collector's booster cards, they are not legal for drafting, but they do give you a fresh way to enjoy the game with mechanics that are exclusive to the Un-sets line
Is Spinnerette, Arachnobat a good card
When Black Vise was restricted just before the first Pro Tour, Necropotence began to gain traction
And I think that with the right resources, you should be able to build a creature-heavy deck that ignores the mana curve and weighs towards huge game ending threats to have hatching out of Atlas eggs

Decklist: Traxos Artifacts in Historic Traxos, Scourge of Kroog | Illustration by Lius Lasahido Commander (1) Creatures (28) Big Mother Mouser Brass Squire Burnished Hart Chief of the Foundry Darksteel Juggernaut Duplicant Foundry Inspector Glaring Fleshraker Hedron Crawler Jhoira's Familiar Manakin Metalwork Colossus Ultima, Origin of Oblivion Mishra's Self-Replicator Myr Battlesphere Myr Retriever Ornithopter Ornithopter of Paradise Palladium Myr Salvager of Ruin Scrap Trawler Scrapyard Recombiner Shambling Suit Shimmer Myr Steel Hellkite Steel Overseer Voltaic Servant Workshop Assistant Instants (2) Scour from Existence Titan's Presence Sorceries (1) Artifacts (31) Argentum Armor Blackblade Reforged Clock of Omens Coin of Mastery Dissection Tools Ebony Fly Everflowing Chalice Fireshrieker Ghostfire Blade God-Pharaoh's Statue Hedron Archive Ichor Wellspring Lightning Greaves Manifold Key Mask of Memory Meteor Sword Mind Stone Mirrormind Crown Moonsilver Key Nevinyrral's Disk Pristine Talisman Sculpting Steel Spine of Ish Sah Swiftfoot Boots Thran Temporal Gateway Trading Post Voltaic Key Dawnsire, Sunstar Dreadnought Ace's Baseball Bat Genji Glove Andril, Flame of the West Lands (37) Aether Hub Arch of Orazca Ash Barrens Buried Ruin Cave of Temptation Crawling Barrens Cryptic Caves Darksteel Citadel Detection Tower Dread Statuary Emergence Zone Encroaching Wastes Forge of Heroes Guildless Commons Haunted Fengraf Scene of the Crime Labyrinth of Skophos Mage-Ring Network Mirrodin's Core Nephalia Academy Painted Bluffs Phyrexia's Core Radiant Fountain Rogue's Passage Ruins of Oran-Rief Scavenger Grounds Sea Gate Wreckage Shimmering Grotto Shrine of the Forsaken Gods Snow-Covered Wastes Temple of the False God Thespian's Stage Tomb of the Spirit Dragon Tyrite Sanctum Hall of Tagsin Warped Landscape Zhalfirin Void Ive put together a colorless deck so you can more or less see what direction it might take

8 Atsushi, The Blazing Sky Is Useful In A Deck With Sacrifice And Reanimate Effects Atsushi, The Blazing Sky is a part of the cycle of legendary enchantment creature dragons for this set