While exploring Undermountain in the Waterdeep: Dungeon of the Mad Mage published adventure, the party has encountered a few monsters that are resistant to non-magical weapons. The artificer in the party wants to "infuse" the barbarian's greatsword to make them more effective at tanking. It has been about 2 hours since the party finished a long rest, and the Artificer has not used their Infuse Item feature in several days.
The somewhat ambiguous text in question from the artificer's Infuse Item feature says:
Whenever you finish a long rest, you can touch a non-magical object and imbue it with one of your artificer infusions, turning it into a magic item.
I see two ways to read this:
- Whenever means "at any time after" you finish a long rest
- Whenever means "immediately after"
Which would be the correct interpretation of RAW, and why? Assuming all other factors have been met to allow this infusion, when can an Artificer use the Infuse Item feature to imbue an item with an artificer infusion?
(The Q&A How does the artificer's Resistant Armor infusion work? goes over a bunch of information about artificers and their infusions, but does not cover the "when" answer I seek.)