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Following theD&Druleset, Metamagic is a spell modifier mechanic available exclusively toSorcerersthat changes how theirspellsfunction in select ways. Metamagic consumes Sorcery Points, a limited resource all Sorcerers have available to them.
Related:Baldur’s Gate 3: Best Sorcerer Spells, Ranked
Baldur’s Gate 3allows you to convert Sorcery Points into spell slots and spell slots into Sorcery Points as a Sorcerer by consuming an Action. The Sorcerer class is defined by this ability, and it makes it a viable alternative toWizardin BG3.
All Types Of Metamagic
There areseven types of Metamagica Sorcerer can choose from during level-ups.At level 2, your Sorcerer will be able topick two out of the four Metamagics.
At level 3, you will be asked topick one more Metamagicfrom the complete pool of seven Metamagics. And,at level 10, the Sorcerer will again be able toselect one additional Metamagic, finalizing thetotal number of Metamagics you can have on a character at four. The remaining three Metamagics will remain out of reach unless you respec.

Unlocked At Sorcerer Level 2
Sorcery Points
Description
Metamagic: Careful Spell
1 Sorcery Point
Allies are safe from the effects of any spell that requires saving throws(Fear, Slow, Hypnotic Pattern, etc.) to be avoided.
Metamagic: Distant Spell
Spells can travel farther. Melee spells can be cast like ranged spells.
Metamagic: Extended Spell
Double duration for spells that last multiple turns(Crown of Madness lasts 6 turns instead of 3, Blade Ward can last 4 turns instead of 2, etc.)
Metamagic: Twinned Spell
Depends on the spell slot level
Single-target spells can be double-cast. AoE spells cannot be double-cast. (Fire Bolt can be used, but Fireball can’t).

Unlocked At Sorcerer Level 3
Metamagic: Heightened Spell
3 Sorcery Points
Characters are at a Disadvantage against spells that need to be avoided by succeeding in saving throws(Fear, Slow, Hypnotic Pattern, etc.).
Metamagic: Quickened Spell
Spells can be cast using a Bonus Actioninstead of an Action.