It replaces every one of them with a card draw, and it even fixes your mana with its mana ability
Golbez is particularly compatible as he uses leftover mana to fill your graveyard and deal extra damage
Ive been collecting for over 30 years and working in the hobby for over a decade
The next iteration on the idea was from Alliances (1996), where the Phantasmal Fiend was still black, but the cost for the activation for switching was blue, so essentially while the card was black, the ability was blue, so the effect had already changed colors
It's an Elf and it creates a Wolf when it comes into play, and it sometimes creates another Wolf when a Changeling enters the battlefield
I think that, in certain pods and groupings, you should be able to make an assumption based upon personalities, deck strength, and colors on who the best player to give the pendant would be