When you cast a spell that targets only one creature and doesn’t have a range of self, you can spend a number of sorcery points equal to the spell’s level to target a second creature in range with the same spell (1 sorcery point if the spell is a cantrip).
Yep. It's a single-target spell no matter what level spell slot you cast it with, so as long as you have the sorcery points to spend on it you can definitely use Twinned Spell.
The title mentions concentration and the text doesn't. Not sure what you were going to ask about, but there would only be one "concentration" for the spell, so a failed concentration save would break both spells.
They said you can't have two concentration spells at the same time.
Twinned spell metamagic doubles the number of targets, it does not double the casting of the spell. The casting time, components, duration (including concentration), etc are all only for 1 spell that now has 2 targets.
The spell enhance ability affects one target. However, you can spend a higher level spell slot to target more creatures with this single spell cast. When you fail a concentration check, enhance ability drops on all targets you have affected. Twinning a spell is like using a higher level spell slot with enhance ability. If you want to cast enhance ability on two targets, you could twin it or use a 2nd level spell slot and both would mechanically work the same.
if you twinned haste on an ally and an enemy could you then drop the spell on only the enemy so they would essentially lose a turn of combat?
I don't see how you could. The only way to end the spell early is to stop concentrating. You only have 1 concentration and it is for both targets of the spell.
Can a sorcerer twin a polymorph?
Sure can.
Twinned Spell
When you cast a spell that targets only one creature and doesn’t have a range of self, you can spend a number of sorcery points equal to the spell’s level to target a second creature in range with the same spell (1 sorcery point if the spell is a cantrip).
Polymorph fits these requirements quite nicely.
Yep. It's a single-target spell no matter what level spell slot you cast it with, so as long as you have the sorcery points to spend on it you can definitely use Twinned Spell.
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Thanks, I encountered some nay-sayers and I wasn't sure of the wording.
I'm curious as to what their reasoning was for being against it.
The title mentions concentration and the text doesn't. Not sure what you were going to ask about, but there would only be one "concentration" for the spell, so a failed concentration save would break both spells.
They said you can't have two concentration spells at the same time.
Twinned spell metamagic doubles the number of targets, it does not double the casting of the spell. The casting time, components, duration (including concentration), etc are all only for 1 spell that now has 2 targets.
Exactly as DxJxC said. Twinning does not cast a spell twice - if it did you'd use 2 spell slots.
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You're not. Twinning makes it a single concentration spell that gets multiple targets. Like an upcast hold person.
To add more clarity, think of it this way:
The spell enhance ability affects one target. However, you can spend a higher level spell slot to target more creatures with this single spell cast. When you fail a concentration check, enhance ability drops on all targets you have affected.
Twinning a spell is like using a higher level spell slot with enhance ability. If you want to cast enhance ability on two targets, you could twin it or use a 2nd level spell slot and both would mechanically work the same.
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if you twinned haste on an ally and an enemy could you then drop the spell on only the enemy so they would essentially lose a turn of combat?
I don't see how you could. The only way to end the spell early is to stop concentrating. You only have 1 concentration and it is for both targets of the spell.
makes sense