Drannith Magistrate, Sanctum Prelate, Archon of Emeria, Lavinia, Azorious Renegade, Boromir, Warden of the Tower, Aven Mindcensor & Containment Priest shut down a LOT of strategies
I put Sin Prodder, Tireless Tracker, and Bygone Bishop all in the same category of reasonable creatures with incidental built-in card advantage
Skyclave Apparition is important not just for its overall power level, but for how it re-introduced this kind of creature-based interaction as a signature white mechanic
Aggro decks often revolve around cheap damage spells or low-cost creatures that can create an offensive board style out of the gate
WotC reprint policy: Wizards of the Coast may include Surge Foil singles in future Secret Lair drops or Masters sets