Spells you imbue are triggered exactly when you desire.
Prerequisite: Imbue class feature
Benefit: When you imbue a spell, you can set two separate conditions that will trigger the imbued spell, instead of only one. Alternatively, you can choose to set only one condition (as normal). If you do, the first time that condition would be met, you can prevent the imbued spell from triggering as a free action. The spell is prevented from triggering from that same condition for 10 minutes, after which it can trigger as normal.