机关术士artificer和超魔咒使incantatrix均有这个职业能力。我想请问按照一般的判罚此能力使用时是只能附加一个超魔专长的效果还是可以消耗更多充能使多个超魔叠加？
Metamagic Spell Trigger (Su): At 5th level, an incantatrix gains the ability to apply a metamagic feat she possesses to the effect of a spell trigger item (generally a wand). To use this ability, she must have the appropriate item creation feat to make the spell trigger item she is using. Using metamagic spell trigger expends a number of additional charges from the item equal to the number of effective spell levels the metamagic feat would add to a spell. For example, an incantatrix can use Quicken Spell to modify a spell cast from a wand by spending 5 charges (1 + 4 additional charges for the spell slot increase). Alternatively, she can apply Empower Spell to the effect by spending 3 charges, or trigger it silently by spending 2 charges. The Still Spell feat confers no benefit when applied to a spell trigger item.
An incantatrix cannot use this ability when using a spell trigger item that does not h ave charges, such as a strand of prayer beads.
Metamagic Spell Trigger (Su): At 6th level, an artificer gains the ability to apply a metamagic feat he knows to a spell trigger item (generally a wand). He must have the appropriate item creation feat for the spell trigger item he is using. Using this ability expends additional charges from the item equal to the number of effective spell levels the metamagic feat would add to a spell.
For example, an artificer can quicken a spell cast from a wand by spending 5 charges (4 additional charges), empower the spell by spending 3 charges, or trigger it silently by spending 2 charges. The Still Spell feat confers no benefit when applied to a spell trigger item.
An artificer cannot use this ability when using a spell trigger item that does not have charges, such as prayer beads.
