Feels a bit Mirrodin-esque
I recommend to swap them out with dedicated sideboard hate that plays better at stabilizing your board, like Aether Gust or Beza, the Bounding Spring
Timmy likes an army of mushroom people.) Karador, Ghost Chieftain Spike Vish Kal, Blood Arbiter Spike Zedruu the Greathearted *f-etch* Johnny Ruhan of the Fomori Spike Nin, the Pain Artist Johnny and Spike The Mimeoplasm Johnny and Spike Damia, Sage of Stone Spike Skullbriar, the Walking Grave Timmy and Spike Not that it was all Timmy and Johnny
limited event costs the same as an Arena booster at 200 gems or 1,000 gold
Cryogen Relic (Common) Yes, its back again
This could lead to an end-game that revolves around casting Ugin, the Spirit Dragon, or possibly just a more aggressive deck, maybe even featuring Embercleave