The stats on Turntimber Ranger start off low, but as the game goes on and more Allies enter, it'll grow into a massive threat
Snow Villiers While lacking some of the downside of some similar creatures, you also have a capped upside on a middling cost creature without evasion who can be rendered impotent by destruction of other things
Its not just old favourites that are coming into play via Modern Horizons 2 though
Smellerbee, Rebel Fighter Smellerbee, Rebel Fighter accelerates aggro decks with substantial card draw
Smothering Tithe allows you to create a Treasure token each time an opponent draws a card unless they pay two generic mana
Mutate it from the command zone onto something coola creature with double strike seems pretty saucyand then if it gets killed, simply let it go to the graveyard instead of the command zoneand no tax