SAVING STANDARD BY GETTING THIS BANNED NOW... LOL Professor Onyx Ultimatum Standard MTG Arena

Music Used:
Time to Home - / g-r-i-z-time-to-home
Twitch: / mono_black_magic
Patreon: / monoblack
My Second channel: / @monoblackgaming
Companion
1 Yorion, Sky Nomad (IKO) 232
Deck
4 Blood on the Snow (KHM) 79
4 Strixhaven Stadium (STX) 259
1 Vorinclex, Monstrous Raider (KHM) 199
1 Valki, God of Lies (KHM) 114
4 Cram Session (STX) 170
4 Mazemind Tome (M21) 232
4 Sea Gate Restoration (ZNR) 76
4 Alrund's Epiphany (KHM) 41
3 Snow-Covered Island (KHM) 278
4 Emergent Ultimatum (IKO) 185
4 Cultivate (STA) 51
1 Kiora Bests the Sea God (THB) 52
4 Elspeth's Nightmare (THB) 91
4 Wolfwillow Haven (THB) 205
4 Binding the Old Gods (KHM) 206
1 Professor Onyx (STX) 83
1 Ketria Triome (IKO) 250
2 Snow-Covered Swamp (KHM) 280
3 Snow-Covered Forest (KHM) 284
2 Temple of Malady (M21) 253
4 Barkchannel Pathway (KHM) 251
4 Darkbore Pathway (KHM) 254
4 Zagoth Triome (IKO) 259
4 Clearwater Pathway (ZNR) 260
4 Fabled Passage (M21) 246
1 The World Tree (KHM) 275
Sideboard
4 Environmental Sciences (STX) 1
2 Introduction to Annihilation (STX) 3
1 Yorion, Sky Nomad (IKO) 232