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Magic: The Gathering Comprehensive Rules Changes

Masters Edition to Lorwyn (Single Change View)

General changes

Old rule (Masters Edition) New rule (Lorwyn)

418.5a.

The values of an object's characteristics are determined by starting with the actual object, then applying continuous effects in a series of layers in the following order: (1) copy effects (see rule 503, "Copying Objects"); (2) control-changing effects; (3) text-changing effects; (4) type-, subtype-, and supertype-changing effects; (5) all other continuous effects, except those that change power and/or toughness; and (6) power- and/or toughness-changing effects. Inside each layer from 1 through 5, apply effects from characteristic-defining abilities first, then all other effects in timestamp order. Inside layer 6, apply effects in a series of sublayers in the following order: (6a) effects from characteristic-defining abilities; (6b) all other effects not specifically applied in 6c, 6d, or 6e; (6c) changes from counters; (6d) effects from static abilities that modify power and/or toughness but don't set power and/or toughness to a specific number or value; and (6e) effects that switch a creature's power and toughness. Within each sublayer, apply effects in timestamp order. Note that dependency may alter the order in which effects are applied within a layer or sublayer. See also the rules for timestamp order and dependency (rules 418.5b-418.5g).

Example: Crusade is an enchantment that reads "White creatures get +1/+1." Crusade and a 2/2 black creature are in play. If an effect then turns the creature white (layer 5), it gets +1/+1 from Crusade (layer 6d), becoming 3/3. If the creature's color is later changed to red (layer 5), Crusade's effect stops applying to it, and it will return to being a 2/2.

Example: Gray Ogre, a 2/2 creature, is in play. An effect puts a +1/+1 counter on it (layer 6c), making it 3/3. An effect that says "Target creature gets +4/+4 until end of turn" is applied to it (layer 6b), making it 7/7. An enchantment that says "Creatures you control get +0/+2" enters play (layer 6d), making it a 7/9. An effect that says "Target creature becomes 0/1 until end of turn" is applied to it (layer 6b), making it a 1/4 (0/1, plus +1/+1 from the counter, plus +0/+2 from the enchantment).

418.5a.

The values of an object's characteristics are determined by starting with the actual object, then applying continuous effects in a series of layers in the following order: (1) copy effects (see rule 503, "Copying Objects"); (2) control-changing effects; (3) text-changing effects; (4) type-changing effects (which includes effects that change an object's card type, subtype, and/or supertype); (5) all other continuous effects, except those that change power and/or toughness; and (6) power- and/or toughness-changing effects. Inside each layer from 1 through 5, apply effects from characteristic-defining abilities first, then all other effects in timestamp order. Inside layer 6, apply effects in a series of sublayers in the following order: (6a) effects from characteristic-defining abilities; (6b) all other effects not specifically applied in 6c, 6d, or 6e; (6c) changes from counters; (6d) effects from static abilities that modify power and/or toughness but don't set power and/or toughness to a specific number or value; and (6e) effects that switch a creature's power and toughness. Within each sublayer, apply effects in timestamp order. Note that dependency may alter the order in which effects are applied within a layer or sublayer. See also the rules for timestamp order and dependency (rules 418.5b-418.5g).

Example: Crusade is an enchantment that reads "White creatures get +1/+1." Crusade and a 2/2 black creature are in play. If an effect then turns the creature white (layer 5), it gets +1/+1 from Crusade (layer 6d), becoming 3/3. If the creature's color is later changed to red (layer 5), Crusade's effect stops applying to it, and it will return to being a 2/2.

Example: Gray Ogre, a 2/2 creature, is in play. An effect puts a +1/+1 counter on it (layer 6c), making it 3/3. An effect that says "Target creature gets +4/+4 until end of turn" is applied to it (layer 6b), making it 7/7. An enchantment that says "Creatures you control get +0/+2" enters play (layer 6d), making it a 7/9. An effect that says "Target creature becomes 0/1 until end of turn" is applied to it (layer 6b), making it a 1/4 (0/1, plus +1/+1 from the counter, plus +0/+2 from the enchantment).