If you opened Town cards that match those colors and want to use them, subtract one (matching) basic land per Town
And then you can also do the dreaded bounce, block, bounce and stop an attack (You turn it from an aura to a dork, block, and then tap to make it an aura before damage is dealt, and the attacker is still blocked,)
As an example, if you play Illusions of Grandeur, you gain 20 life
Carnage is the more likely play though, as it's basically a Blightning that costs another mana
7,165 Inclusions, 3% of 246,543 Decks) Easily the best way to ensure we can cast The One RingThe One Ring whenever we want is to have a means to do so in the command zone
Our main plan against creature-based decks is to use cards like Merfolk Secretkeeper and Wall of Lost Thoughts to stonewall early-game creatures and eventually chump block bigger threats to buy enough time to cast a bunch of mill cards and (hopefully) empty our opponent's library