With so many tantalising options in the set, theres often a temptation to play around with the cards that mean something to you, rather than ones that are necessarily good
You can also spend two to sac this to counter an ability as an emergency like the win-clause of Thassa's Oracle
Combine all of those together, and you end up with a deck capable of dishing out absurd amounts of damage
Probably the most played Theros god, even including the later reprints, Purphoros is a great inclusion in the set
The chaos effect at least lets you possibly get some Commander damage in, I guess
When we look at that ability, we arent even up a card at the end and we dont get a freebie because we have to commit to an attack with a specific creature type