<P> These are keywords which may appear in any Magic set, particularly the Core Sets where they are usually the only keywords (though some expert - level keywords may appear occasionally in Core Sets; each Core Set beginning with Magic 2011 has included one expert - level keyword as the "returning mechanic"). They are also used in many expert - level expansions, but in those sets they are printed without reminder text . </P> <P> Deathtouch is a static ability that causes a creature to be destroyed as a result of having been dealt damage by a source with deathtouch . In this way, for a creature with deathtouch, any nonzero amount of damage it deals to another creature is considered enough to kill it . Deathtouch appears mostly on black cards and green cards, and is often thematically associated with poisonous or cursed creatures . Prior to the introduction of the keyword, similar abilities have appeared mostly on green and black cards, but in most cases those abilities were functionally different (typically triggering on combat damage and / or at end of combat). This ability was first printed on a single timeshifted creature from Future Sight, Thornweald Archer . Older cards with this ability, such as Cruel Deceiver, were not changed to gain deathtouch . If a 15 / 15 was blocked by a 1 / 1 with deathtouch, both would die . </P> <P> Creatures with defender can't attack . This ability was formerly associated with Walls, as the creature type Wall had implicit "rules baggage" that prevented such creatures from attacking . The rules baggage was removed and the keyword was first used in the Kamigawa block . </P> <P> A creature with double strike deals both first strike and normal combat damage . For instance, a 1 / 2 creature with double strike such as Boros Swiftblade would defeat a 2 / 1 creature in combat and survive, due to destroying it with first strike damage . It would also destroy a 2 / 2 creature, though be destroyed itself because the opposing creature survived the first strike to deal its own damage . As with first strike, double strike appears mostly on red and white cards . Double strike was first keyworded in Legions and first used in a Core Set in Tenth Edition . </P>

What does defender mean in magic the gathering