Magic Items – The staff of flowers sprouts only harmless and non-magical flowers, but what does that mean exactly?

For those of you unfamiliar with this article:

"This wooden staff has 10 charges, and while holding it you can use 1 charge from the staff with an action and have a flower sprout from a piece of earth or earth within 5 feet of you or the staff itself, unless When you select a particular flower variety, the staff creates a daisy with a mild scent, which is harmless and non-magical and grows or withers like a normal flower. "

But what counts as a harmless or not magic flower? The powder puff, for example, is harmless like a flower, but can be dried and powdered to form an explosive substance. The flower itself is harmless, right? Or is the harmful and / or magical power also restricted?

dnd 5e – Is there a creature that is resistant or immune to non-magical damage, with the exception of clubs, hitting and piercing?

Reading this question, is there any difference between magic damage and non-physical damage?

I was wondering if there is a monster that is resistant or immune to non-magical damage, except for the usual bleeding, pervasive, and disruptive damage. For example, this monster could withstand a fire damage coming from a non-magical source, so using a flashlight may not be as effective as flinging a flashlight fire bolt it.

Is there an example of such a creature?

Any resistance or immunity resistance will suffice. If there is a precedent or tradition from a previous edition that a creature has such resistance / immunity, I would also welcome that information.

dnd 5e – Can a sorcerer make a non-magical weapon with her Pact of the Blade?

In the pact of the blade text the following is read:

… You can turn a magic weapon into a pact weapon by performing a special ritual while holding the weapon. …

That shows me that just magic weapons can be tied this way. Does that mean that a silvered weapon, an adamantine weapon, or even a secular weapon can not be bound that way?

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