Examples: Arcane Sanctum (enters tapped, taps for white/blue/black) Nomad Outpost (enters tapped, taps for red/white/black) 3
Urza, Chief Artificer This is the only instance of affinity for artifact creatures (thats WotC making the mechanic safer)
For instance, Mother Bear, a 2/2 for two from Modern Horizons , is a vanilla Grizzly on the battlefield, but when its in the graveyard, you can pay to create two 2/2 Bear tokens
The difference is that this card still has great potential even when you dont meet the criteria
Kadena and Animar share two colors, blue and green, but differ on the third, with Animar's third being red and Kadena's being black