Is it possible to drink a flying potion and cast greater invisibility spell on myself (both spells would require concentration), so I can fly around invisible?


A Potion of Flying specifically doesn't require concentration.

In page 141 of the DMG under "Spells", it specifically mentions potions as an exception to the rule of concentration:

... Many items, such as potions, bypass the casting of a spell and confer the spell's effects, with their usual duration.

So, if the potion does not say it requires concentration, it's safe to assume that it doesn't. The potions listed in the DMG all say in parenthesis that they do not require concentration but your DM may invent a house-ruled potion that does require concentration, so it's still safer to ask your DM.

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  • \$\begingroup\$ What sort of issue was it? Perhaps I wasn't clear (I sometimes am, and I get it alot) \$\endgroup\$ – daze413 Oct 15 '15 at 3:22
  • \$\begingroup\$ -1. Quoted text refers to changing casting time. And specialy states that duration is still usual. A duration of concentration remains the duration of concentration. \$\endgroup\$ – annoying imp Oct 15 '15 at 15:15
  • \$\begingroup\$ @annoyingimp I thought "bypass the casting of a spell" was clear enough to mean that you actually don't cast the spell yourself but instead receive the spell's benefit. \$\endgroup\$ – daze413 Oct 15 '15 at 15:25
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    \$\begingroup\$ Oh, I was dumb. Now I see that Potion of Flying doesn't even mention spell Fly and has different effect and different duration. \$\endgroup\$ – annoying imp Oct 15 '15 at 16:46
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    \$\begingroup\$ @daze413 Minor edits were discouraged because there used to be a robot that converted things to be "Community Wiki" if they were edited enough, denying people the reputation they'd earned. This was fixed a while ago. Now the only reason to discourage minor edits is that they cause questions to appear on the front page without having any new meaningful content, and that's not a problem unless it becomes common. \$\endgroup\$ – GMJoe Oct 15 '15 at 23:28

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