As far as flavor and worldbuilding is concerned, Foundations takes the old Core Set approach of checking in on popular MTG planes across different points in time
Effects that switch the creatures power and toughness are always applied after any other power or toughness changing effects, including this one, regardless of the order in which they are created
Equip only as a sorcery.) Attaching an Equipment with its enters-the-battlefield triggered ability isn't the same as using its equip ability
For the uninitiated, Commander is a semi-casual format for Magic: the Gathering
This pairs nicely with two other abilities that The Meathook Massacre has, having your opponents lose one life when one of your creatures dies, and gaining one life when one of their creatures dies
That context matters, because early Pokmon cards were understood emotionally before they were evaluated technically