Crystals The full colored cycle of Crystals reduce costs, and each one has a static ability and an activated ability, so the 4 mana value slot is a key one to launch you into the the biggest and strongest cards, and rely on 2-mana rocks to curve into these on turn 3
10 Isperia, Supreme Judge With Isperia, Supreme Judge as your commander, you can sit back and relax a little while your opponents attack each other
I had high expectations for the gold cards in New Capenna , but looking through the file, it seems that they played it very safe with regard to most things three-color
On top of that, some playgroups will go through "Rule 0" discussions before playing Commander, essentially self-regulating games by establishing power levels of decks and asking if some cards are fine to play
The mana is cheap enough to make it work with Leonin Squire reanimation effects, as well