the "timeshifted" mechanics of Echo, Flanking, Kicker, Madness, Morph, and Shadow. Planar Chaos marked the first appearance of spells with Echo costs that did not match their casting costs, as well as the first appearance of single color split cards. Future Sight Future Sight contains more keyword mechanics than any other Magic: The Gathering set ever printed, . In addition to reprising Flash, Split Second, Suspend, and Vanishing from earlier in the block, Future Sight continues the block's theme of temporal manipulation with Cycling and Scry, this time as a mechanic in its own right rather than as a bonus rider. Furthermore, the set includes three different forms of "timeshifted" mechanics. Most directly, Future Sight included the "past-shifted" mechanics from Time Spiral of Echo, Flanking, Kicker, Madness, Morph, and Shadow. However, these mechanics no longer appeared in cards from the past, their native environment. Many cards in Future Sight combine a "timeshifted" ability with an ability that originated in the Time Spiral block. Furthermore, Future Sight freely used all the keyword mechanics that debuted following 8th Edition (Bloodthirst, Convoke, Dredge, Graft, Hellbent, Scry, and Transmute). Future Sight also included five "alternate-shifted" mechanics that had previously appeared on cards in a non-keyword fashion. These are Deathtouch, Lifelink, Poisonous, Reach, and Shroud. Under current rules, any (nonzero) amount of damage from a creature with Deathtouch to another creature is lethal, and damage from a creature with Lifelink causes its controller to gain that much life. Whenever a creature with Poisonous X deals combat damage to an opponent, that opponent gets X poison counters (ten or more poison counters causes a player to lose the game). Creatures with reach may block as though they had flying. A permanent with shroud cannot be the target of spells or abilities. Four of those mechanics (all but poisonous) have subsequently become "evergreen" and appeared on cards in Core Sets. Future Sight also introduced the following "future-shifted" mechanics. These mechanics are variants on a past ability, intended to hint at possible variations that could appear in future sets: Absorb - This ability has a number, such as Absorb 2. A creature with absorb has the listed number of damage prevented if it would take damage from a given source. Aura Swap - Aura Swap allows the player to pay the Aura Swap cost of a card and exchange it with another Aura card in hand. Delve -