With this, you can use a Gold token to pay the two mana for an improvised spell, and that was a little too good
Rainbow Foil cards are noticeably brighter, particularly under light
At first blush, that makes it sound like a net win for the old and a net loss for the new, but let's hone in on what's gone: Legacy and Theme , the former of which tasked players with tapping into only older cards, and then only from the HeartGold & SoulSilver and Black & White generations
That could be equip costs, but it could also be something like, say, Gilraen, Dnedain ProtectorGilraen, Dnedain Protector, reducing the cost to a simple tap
Or printing variance
If a spell or ability lets an opponent cast a spell as part of its effect (such as suspend and rebound do), that opponent can't cast that spell since the resolving ability is still on the stack