Another benefit would be characters that directly benefit from being at a location, such as this new Minnie Mouse: There are no limits to the amount of characters that can be at a specific location, just as long as you pay the cost to move each of those characters to that specific location
In multicolor builds, white usually acts as the stabilizing piece of the deck
For the price of four ink, you get a bit of pretty much everything: defence, lore, the ability to draw cards and the power to heal your other characters
That means that if they attack the person with the most life, or tied for the most, they get a +1/+1 counter on them
A few notable cards it pairs with for 2-card infinite combos include: #40
The biggest factor is which set it comes from