Shadowverse

Nowadays, there aren't any particularly strong artifact decks in the meta, only Seraph, but killing him is more trouble than it's worth.

I don't want to disappoint you, Tox, but the picture you've painted is far from the truth:
Vampires have a Castle that summons bats and a Dire Bond. By destroying the latter in the same turn it was summoned, we deprive the opponent of 6 lives and the ability to draw three additional cards. It's very satisfying when you pull this off.
A Knight without a banner is a bad Knight. Frontline and Thief's Creed are less common, but still quite unpleasant.
Havencraft still actively uses Elana. Guardian Sun is seen a bit less often, but it's also quite an unpleasant thing. Don't forget about the artifact that summons other artifacts. Recently, it has been appearing more and more often.
Dragons also have a number of unpleasant artifacts, one of which summons good units every turn, and another turns cheap cards into Hell Dragons. And the first one is present in most of the players of this class that I've encountered.
Only Elves, Shadowcraft, and Runes (although Dance of Death isn't a great spell against them either, unless it's a deck focused on Earth) rarely use their native artifacts. And even among them, there aren't many that are really that unpleasant. But they like to play through Purgatory, which should be destroyed at the first opportunity. So, Execute also performs well here.