This also fits the raw data more or less, as the ratio of secret rares to total number of cards from that sheet in the samples looked at is 65.3 for my own data, 61.9 for that of @burpies and 58.8 from the Derium video
Advent of the Wurm Archfiend's Vessel Armada Wurm Awaken the Sky Tyrant Bloodsoaked Altar Bottle of Suleiman Broodmate Tyrant Call the Skybreaker Crested Sunmare Dark Wings Bring Your Downfall Death by Dragons Demonic Covenant Demonic Rising Din of the Fireherd Draconic Disciple Dragon Roost Dragonkin Berserker Dragonmaster Outcast Feudkiller's Verdict Garruk, Apex Predator Gideon, Ally of Zendikar Goro-Goro and Satoru Goro-Goro, Disciple of Ryusei Lathliss, Dragon Queen Look Skyward and Despair Loot Dispute Mammoth Bellow Nahiri, the Lithomancer Ob Nixilis of the Black Oath Old One Eye Omnath, Locus of Rage One Dozen Eyes Priest of the Blood Rite Quest for the Gravelord Rite of the Dragoncaller Rith, the Awakener Avatar Roar of Endless Song Sandwurm Convergence Sarkhan the Mad Shiv Skirsdag High Priest Skyline Despot Spawning Grounds Tatsumasa, the Dragon's Fang Temur Monument The Sentry, Golden Guardian Tidal Wave Tolsimir, Midnight's Light Tomb of Urami Tuktuk the Explorer Water Gun Balloon Game
While its disappointing to see the best Warhammer faction not get its own Commander deck (stupid Marines soaking up the spotlight), fans will no doubt appreciate more cheeky references
This is still a powerful card, and it's possible it might see some niche play in the sideboards of blue decks that don't have access to board wipes
