Cantrips like Opt and Consider are essential: they give me cheap card selection and the ability to dig for answers, and when paired with value engines like Talrand, Sky Summoner and Murmuring Mystic, they can add up to a massive board before long
however, that might be all you need if you drop it early enough in the game
End Step Eldrazi, for being world-devouring eldritch monstrosities that ruin minds at he mere sight of them, remain wildly popular, and Eldrazi Incursion and the rest of Modern Horizons 3 only look to extend that feeling
Neither mode is particularly impressive, but pairing both on a single card makes it an interesting silver bullet for decks that might need answers to threats they cant otherwise handle, like Ketramose, the New Dawn
Levels 2 and 3 are all just upside on this class enchantment
You might even get more than four mana, which is kinda nuts so early in the game