Virtually every color has some kind of spell that spits out tokens, and there's plenty that are ETB creatures themselves
Purphoros works well when combined with similar effects like Terror of the Peaks as well as any card that generates token creatures
Fitting with the general flavor of the card though, your opponent has the option to live if that choice is better for them
You can add Ghost Ogre with this effect, adding another form of disruption to you combo
This immediately benefits us two ways: 1) our overcosted finishers like Shard of the Void Dragon become much better since we can get them on the battlefield reliably fast and 2) our lesser ramp options like Hedron Archive can easily be cut since they're less needed
In the film, the company details the process of how a new set of Pokmon cards is created, from the text lists of names and moves sent to them by the Japanese card makers, all the way to the physical packs in peoples hands