Your opponent can concede the game or pay 10 life(!!) to effectively counter the ability
Alenni, Brood Recruiter Baru, Fist of Krosa Battle Frenzy Boartusk Liege Cabaretti Charm Catharsis Creakwood Liege Deranged Hermit Glistening Deluge Howlpack Alpha Imperious Perfect Juniper Order Advocate Jyoti, Moag Ancient Kaysa Kinbinding Meng Huo, Barbarian King Murkfiend Liege Nemata, Grove Guardian Nissa, Ascended Animist Paragon of Eternal Wilds Phabine, Boss's Confidant Plane-Merge Elf (playtest) Rank and File Restless Prairie Rouse the Swarm Selesnya Guildmage Silk, Web Weaver Squirrel Wrangler Sylvan Anthem Thelonite Hermit Tolsimir Wolfblood Verdeloth the Ancient Wall Crawl Wilt-Leaf Liege
Nearly all of its power lies in its mana doubling ability for colorless mana, the other two abilities are bonuses
Artistically and thematically, Bloomburrow builds on a long literary tradition of little guys
Path of Exile and Swords to Plowshares are there are instant-speed answers, but they seem insufficient to delay the armies of players that don't want to stare down a Silent Arbiter
