View source for Metamage (feat)

{{FB|pre=The ability to cast at least one powered [[spell]]
|You've learned to manipulate and transform the spells you cast, using a practice called metamagic.  When you cast a spell, you can expend 1 extra magic point when you cast it to give it one of the following effects.

'''''Careful Spell.''''' When you cast a spell that forces other creatures to make a [[saving throw]], you can protect some of those creatures from the spell's full force.  Choose a number of those creatures up to your [[proficiency bonus]].  A chosen creature automatically succeeds on its saving throw against the spell.

'''''Distant Spell.''''' When you cast a spell that has a range of 5 feet or greater, you double the range of the spell.  When you cast a spell that has a range of touch, the range becomes 30 feet.

'''''Extended Spell.''''' When you cast a spell that has a duration of 1 minute or longer, you double its duration, to a maximum duration of 24 hours.

'''''Subtle Spell.''''' You cast the spell without any somatic or verbal components.
}}