Naban plays best with Wizards that have good enters-the-battlefield triggers, while Sevinne likes it when you cast spells out of your graveyard
Or you can discard a card and draw, so she's card flow, ramping, or making a Role for pumping your team or her
And whenever we cast another spell with Convoke, she lets us scry 2 and draw a card
Without any consideration for anything else we can say on average that non hybrid gold cards are about half as playable as mono coloured cards and therefore need to be stronger to obtain a slot
(You descended if a permanent card was put into your graveyard from anywhere.) Legendary Artifact Mechtitan Core , Exile this Vehicle and four other artifact creatures and/or Vehicles you control: Create Mechtitan, a legendary 10/10 Construct artifact creature token with flying, vigilance, trample, lifelink, and haste that's all colors
Plague Myr Speaking of infect, Plague Myr is a mediocre mana dork who happens to have infect stapled onto it, which is indeed enough to make the list