Admittedly, Blazing Volley, Pyroclasm, and one half of Burn Down the House all do what Fire Magic does, but better or cheaper
As for the effect of the card - casting 7 CMC worth of instants isn't hard, so this can often be a 1 mana 4/4 flier that pings two - and if you happen to be in a pillow fort deck that can grant deathtouch to your creatures, that works just fine
----- Stall ----- There are a lot of different types of stall decks
When you bestow anything with Herald you end up with effectively a massive evasive haste threat and utterly break any stalemates
This commander comes with a huge drawback: a single Blasphemous Act will force you to bin all your permanents, ending the game for you
Psychic Sphere is a 50 damage move for two Energy, whereas Psydrive deals 150 damage for four Energy, at the cost of having to discard two Psychic Energy from Mewtwo