One of my favorite archetypes that Wizards has given lots of love over the past couple of years is cast-from-exile decks
The trick is to sacrifice a few treasure tokens, then spend the floating mana to cast a cheap Balrog
I have only seen the same languages you mentioned over the years
Honorable mentions include Levincia, which could be useful in Raging Bolt decks, Iriss Fighting Spirit can be a good alternative Draw supporter if you dont mind discarding a card, and Brocks Scouting can be great in many bench-intensive decks
Urza, Lord High Artificer does it all: It generates obscene amounts of mana, gives you an outlet for infinite mana, and even combos with cards like Winter Orb and Static Orb to lock your opponents out of the game
Host and augment were centered in green and white, so that meant this probably wanted to be one of those two colors