Finally, when you spend five energy you get to return an artifact from your graveyard to the battlefield
The background is aglow with soft, dusky light, giving the entire card a legendary aura
Wendy : But that name came from the card, not vice versa
Similarly, if The Soul Stone is already harnessed and becomes a copy of something else, it stays harnessed, though it's very likely that won't be relevant until that copy effect ends
If you're buying packs to build a Standard deck rather than speculate, Foundations is the sensible choice
Since this triggers on the attack, that means the sacrificing happens before the Declare Blockers step, potentially removing blockers from the battlefield