Blue is the color of intellect, reason, illusion, logic, knowledge, manipulation, and trickery, as well as the classical elements of air and water. Blue's cards are best at letting a player draw additional cards; permanently taking control of an opponent's cards; returning cards to their owner's hand; and countering spells, causing them to be discarded and the mana used to pay them wasted. Blue's creatures tend to be weaker than creatures of other colors, but commonly have abilities and traits which make them difficult to damage or block, particularly "Flying" and to a lesser extent "Shroud". Blue's weaknesses include having trouble permanently dealing with spells that have already been played, the reactive nature of most of its spells, and a small (and expensive) roster of creatures.