Speed rainbows are a division of rainbow decks, hence the speed RAINBOW. Really, they're gaining in popularity, and,soon, what rainbow decks will there be use this on? Even NOW, people rarely go into PvP with fg farming rainbows (I've been PvPing for a long time... ever since I stopped fg farming) and the only AIs I've seen with quantum pillars are rainbows and the level 0s and 1s. So, in essence, if this deck isn't able to stop speed rainbows, it's not an anti-rainbow deck.