As Future Sight hinted at, we did start making monocolor cards with hybrid activations
Goldlust Triad: A little spice, as with myriad it will get you more Knuckles triggers, and it makes more treasure too
Unless you play on a digital platform like Arena, you will probably never see cards being moved into or out of this zone its one of the parts of the game paper players (wisely) skip over unless something makes it specifically relevant like a blue card that says return target spell to its owners hand
Green tends to give creatures trample to take care of a pesky Seedborn Muse or Drannith Magistrate and still punch through for damage
It can be difficult to read a card, recognize the downside, and understand that the downside is dwarfed by the upside
Iroh, Grand Lotus gives a cost to lessons in your graveyard, which makes it one hell of a payoff for lesson cards