After the first Pro Tour, a player who ran two copies in his Top 8 deck declared that you could only compete in Standard if you played Land Tax or Necropotence
Rite of the Dragoncaller $17.57 Whelp
Equip 2 If the equipped creature dealt combat damage only to a player or planeswalker, Thirsting Axes triggered ability triggers
9 Jormungandr, Generaider Boss of Eternity is a Versatile Powerhouse First Printing: Mystic Fighters There is perhaps no archetype in the game as reliant on a field spell as the Generaider archetype, as it sometimes doesn't function if it does not have Generaider Boss Stage on the board
Things like Farewell and Everybody Lives
In standard it was the core to the aptly named Puresteel Paladin deck, using its main ability to draw into more action and later on the metalcraft ability to cheat out on some equip costs, but it has also seen play in Cheerios, a deck based around 0 mana artifacts and Paradoxical Outcome to eventually cast Grapeshot, and most recently in Hammer Time, which focuses on Colossus Hammer, where Puresteel Paladin once again comes in to both help circumvent equip costs