Against linear combo and ramp decks, Herald does next to nothing
Personally, I dont think the design is anything to write home about, but I typically dont like these all gold cards
For the Buggy swarm pilot's perspective on this matchup, see the OP-16 Buggy Blue Deck Guide
Ultimately, this is where I feel like original set foils have the most in common with the Reserved List
I dont think any of these decks are going to be all that exciting when it comes to reprints since its the core of new cards thats the main appeal
Faerie Vandal can grow into a massive flier as we draw extra cards each turn, while Evangel of Synthesis is usually a menacing 3/3 attacker for two that also triggers all of our "draw a second card" creatures when we play it, making it a decent threat and a solid support card