Ashe, Princess of Dalmasca is a bit on the slow side and only playable in decks with a high concentration of artifacts, but the payoff of filtered card draw when it attacks is high enough to want to support it
You build up your tokens, but need to give stuff to opponents to do so, and as long as you avoid giving them cards that cause them to lose, you'll get plenty of 5-star reviews
Its also an artifact, so you have additional synergies with affinity, metalcraft, and so on
Dash is often a bonus, removing the Pilferer from the battlefield as a target for sorcery-speed removal
NATURES CLAIM / CANKERBLOOM Okay so Im cheating already and were only on the second entry
Sceptre of Eternal Glory is great even without an infinite combo, accelerating out late-game strategies a few turns earlier in mono-colored decks