13 cards where the set is “blb” and the collector number >= 343 and the collector number <= 355

Alania, Divergent Storm (Bloomburrow #344)
Baylen, the Haymaker (Bloomburrow #345)
Camellia, the Seedmiser (Bloomburrow #346)
Clement, the Worrywort (Bloomburrow #347)
Finneas, Ace Archer (Bloomburrow #348)
Gev, Scaled Scorch (Bloomburrow #349)
Kastral, the Windcrested (Bloomburrow #350)
Lumra, Bellow of the Woods (Bloomburrow #343)
Mabel, Heir to Cragflame (Bloomburrow #351)
Muerra, Trash Tactician (Bloomburrow #352)
Ral, Crackling Wit (Bloomburrow #353)
Vren, the Relentless (Bloomburrow #354)
Zoraline, Cosmos Caller (Bloomburrow #355)

This search is finished. Now the real work can begin.