In Play (Obsolete) An obsolete term for the battlefield. Cards that were printed with text that contain the phrases “in play,” “from play,” “into play,” or the like are referring to the battlefield and have received errata in the Oracle card reference. See Battlefield. In Response To An instant spell that’s been cast, or an activated ability that’s been activated, while another spell or ability is on the stack has been cast or activated “in response to” the earlier spell or ability. See rule 116.7. Independent See Dependency. Indestructible A keyword ability that precludes a permanent from being destroyed. See rule 702.12. Infect A keyword ability that affects how an object deals damage to creatures and players. See rule 702.89, “Infect.” Ingest A keyword ability that can exile the top card of a player’s library. See rule 702.114, “Ingest.” Instant A card type. An instant is not a permanent. See rule 304, “Instants.” Instead Effects that use the word “instead” are replacement effects. The word “instead” indicates what an event will be replaced with. See rule 614, “Replacement Effects.” Interrupt (Obsolete) An obsolete card type. All cards printed with this card type are now instants. All abilities that, as printed, said a player could “play as an interrupt” can now be activated like any other activated abilities (unless they’re mana abilities, in which case they follow those rules instead). All relevant cards have been given errata in the Oracle card reference. Intervening “If” Clause A specially worded condition checked as a triggered ability would trigger and again as it would resolve. See rule 603.4 Intimidate A keyword ability that restricts how a creature may be blocked. See rule 702.13, “Intimidate.” Island One of the five basic land types. Any land with this subtype has the ability “{T}: Add {U} to your mana pool.” See rule 305.6. Islandcycling See Typecycling. Islandhome (Obsolete) An obsolete keyword ability that meant “This creature can’t attack unless defending player controls an Island” and “When you control no Islands, sacrifice this creature.” Cards printed with this ability have been given errata in the Oracle card reference.
Tournament Rules Additional rules that apply to games played in a sanctioned tournament. See rule 100.6. Traditional Magic Card A Magic card that measures approximately 2.5 inches (6.3 centimeters) by 3.5 inches (8.8 centimeters). See rule 108.2. Trample A keyword ability that modifies how a creature assigns combat damage. See rule 702.19, “Trample.” Transfigure A keyword ability that lets a player search his or her library for a replacement creature card. See rule 702.70, “Transfigure.” Transform To turn a double-faced card so its other face is up. See rule 701.25, “Transform.” Transmute A keyword ability that lets a player search his or her library for a replacement card. See rule 702.52, “Transmute.” Tribal A card type. Whether or not a tribal is a permanent depends on its other card type. See rule 308, “Tribals.” Tribute A keyword ability that allows an opponent to choose between a creature entering the battlefield with +1/+1 counters or an additional ability. See rule 702.103, “Tribute.” Trigger Whenever a game event or game state matches a triggered ability’s trigger event, that ability automatically “triggers.” That means its controller puts it on the stack the next time a player would receive priority. See rule 603, “Handling Triggered Abilities.” Trigger Condition The first part of a triggered ability, consisting of “when,” “whenever,” or “at” followed by a trigger event. See rule 603, “Handling Triggered Abilities.” Triggered Ability A kind of ability. Triggered abilities begin with the word “when,” “whenever,” or “at.” They’re written as “[Trigger condition], [effect].” See rule 112, “Abilities,” and rule 603, “Handling Triggered Abilities.” Trigger Event The event that a triggered ability looks for. Whenever the trigger event occurs, the triggered ability triggers. See rule 603, “Handling Triggered Abilities.” Turn-Based Actions Game actions that happen automatically when certain steps or phases begin, or when each step or phase ends. See rule 703, “Turn-Based Actions.” Turn Markers Markers used to keep track of which players are taking turns in a Grand Melee game. See rule 807.4.