18 cards where the set is “grn” and the rarity is equal to mythic

Arclight Phoenix (Guilds of Ravnica #91)
Aurelia, Exemplar of Justice (Guilds of Ravnica #153)
Chance for Glory (Guilds of Ravnica #159)
Divine Visitation (Guilds of Ravnica #10)
Doom Whisperer (Guilds of Ravnica #69)
Dream Eater (Guilds of Ravnica #38)
Impervious Greatwurm (Guilds of Ravnica #273)
Lazav, the Multifarious (Guilds of Ravnica #184)
March of the Multitudes (Guilds of Ravnica #188)
Mnemonic Betrayal (Guilds of Ravnica #189)
Nullhide Ferox (Guilds of Ravnica #138)
Ral, Caller of Storms (Guilds of Ravnica #265)
Ral, Izzet Viceroy (Guilds of Ravnica #195)
Thousand-Year Storm (Guilds of Ravnica #207)
Trostani Discordant (Guilds of Ravnica #208)
Underrealm Lich (Guilds of Ravnica #211)
Vraska, Golgari Queen (Guilds of Ravnica #213)
Vraska, Regal Gorgon (Guilds of Ravnica #269)

In the blink of an eye, they strode from deep snow to the end of this search.