Playtesting showed that if you costed it as a monstrosity-like ability, it was usually too expensive as a kicker cost
The final deck in the Top 4, was another very interesting choice, and the smartest one for the day in my opinion
Beza, the Bounding Spring Bria, Riptide Rogue Byrke, Long Ear of the Law Dragonhawk, Fate's Tempest Eluge, the Shoreless Sea Glarb, Calamity's Augur Helga, Skittish Seer Hugs, Grisly Guardian Kitsa, Otterball Elite Lumra, Bellow of the Woods Maha, Its Feathers Night Ral, Crackling Wit Rottenmouth Viper Season of Gathering Season of Loss Season of Weaving Season of the Bold Season of the Burrow Stormsplitter The Infamous Cruelclaw Warren Warleader Ygra, Eater of All
I still prefer the old Battle Roads/City/State/Regional/National/World structure but I suppose Battle Roads can be replaced with League Challenges and Cups since Battle Roads were only held twice a year
Blood Seeker Blood Seeker is a two-cost (one generic and one black) creature