This card will apply to anything that cites color, primarily protection

abilities. There also are white cards that prevent damage from

sources of a specific color, blue cards that can control a card of a

specific color, and black cards that allow you discard cards from

your opponent's hand, of a specific color. To study the options,

simply search "color" in the gatherer, and add "choice" for other

manipulation options. Since this is an enchantment that affects every

nonland permanent in play, it will make those permanents vulnerable

to things like Hibernation, which returns all green permanents to their

owner's hand (low-cost, massive-effect). In that case, you could be

setup to counter your opponent's most important permanent spells,

because the return applies to late-game play, and has a converted

mana-cost of only 3. Color manipulation, perhaps, allows for some of

the most powerful combinations in the game - I will have to study

them myself further before I can report my most interesting finds.
Eighth Edition
8ED Blue