Used as a blunt instrument it can be Nevinyrral's Disk and wipe out the whole board, and if you can show your hand via a small investment you can do it at any time with confidence that nothing on board is likely to be too expensive to take out
Being able to counter problematic multi-colored cards for a single colorless mana will be a great effect anytime a counter to colorless strategies exists as a multi-color option , and Null Elemental Blast will have the unique effect of making sideboard decisions that much more difficult based on its mere existence in Modern
We have a four-mana kill spell in mono-Green (assuming you do it correctly, of course), then it pumps something, then it resurrects that same huge thing we used to kill the other thing
This creature not only makes your instant and sorcery spells cost one less to cast, but by sacrificing it you can copy the next instant or sorcery spell you cast that turn - and not just once, but for each time you've cast your Commander from the command zone in that game
Additionally, there are three premium rarities: Epic, Enchanted, and Iconic
With Brimaz making all these artifact tokens, Krark-Clan IronworksKrark-Clan Ironworks would be a great way to trade them in for mana to cast bigger spells, or you could add a Myr RetrieverMyr Retriever along with the Scrap TrawlerScrap Trawler to make infinite mana and, eventually, infinite Incubators