All this sacrificing is going to enable all kinds of death triggers, descend is still around, and you just know that theres going to be some kind of sacrifice archetype in many of the upcoming Limited environments
In the US, at least, stock is remarkably scarce
If you do have Cloud attack, you can benefit from his card draw ability
And in the metagame, if there are a lot of Pokemon weak to fire type Pokemon, this card is a must have in your deck, regardless of the type, you can just keep this card on the bench and utilize its Ability, making all of your Stage 1 Pokemon in play fire type, and therefore doing x2 damage to all of your opponent's Pokemon that are weak to fire type Pokemon
Force of Vigor shows up in top-tier Modern, Legacy, and even Vintage sideboards, and is a staple of competitive Vintage and cEDH decks