The Voyage of the Fallen Star

It does not budge.

*cough* "Try the cloud or storm giant..." *cough*

" … Alright. Let me try. "  Seeing nothing happens, Gintarou becomes a bit daring. He tries to pull off the cup of storm giant this time. 

Again nothing. 

" … I see. "  Gintarou stares at the cup. A strange thought occurs in his big head. " Cups are for drinking, right? Guys, take cover." The warrior waits till everyone takes to the safe distance then pour water from his water skin to storm giant's cup. He runs away from the cup before the last drop hits the bottom of the cup. 

The basrelief starts to glow slightly. But nothing happens, yet.  What do you do?

"Oooh..." Mist says quietly as he climbs out from under the table once more. He stares at the glowing sculpture and looks back to Gintarou.

"A bit in each cup, then? Let's see if there's a crock o' gold at the end of this rainbow." He crosses his arms over his chest and watches.

" Yeah. Getting close but not enough. " Gintarou crawls out from under the table. He takes the water skin again and this time fills all the cups. " If this doesn't work, we might try something else. Like sea water, wine … or cranberry juice, maybe? " 

What order do you fill the cups?

(Ordning order: storm, cloud, fire, frost, stone, hill...? Or the order they're in on the sculpture: storm, cloud, fire, stone, hill, frost...?)

( Gintarou will pour as the order in the sculpture. By the way, am I the only one feels really hilarious that adventurers duck under the giant table every time they do something to the cups? LOL)

Quote from Apophis2000 >>

( Gintarou will pour as the order in the sculpture. By the way, am I the only one feels really hilarious that adventurers duck under the giant table every time they do something to the cups? LOL)

(Hah! Mist is only doing it because he's a coward. XD)

Kraven will be squatting back by the entrance waiting for something to happen, a grin on his face at the antics of his fellow companions.

As Gintarou pours into the cloud giants cup the storm giant's trident glows blue and lighting leaps out, Gintarou make a DC 14 design save or take 13 lightning damage. 

(I guess it's DEX save. )

DEX save with advantage:14

Just when he pours water into the cloud giant's cup, Gintarou hears Magnus screaming something in his head. Without second thought the warrior ducks and barely avoids hitting by the lightning. " My hair! " Gintarou cries sadly. " A death trap a dining room!? What the ninth hell these giants were thinking!"

Druquilla from her safe distance way jumps back slightly surprised at the sudden bolt of lightning, "Well I am not sure if that was the correct order or not. With this it could be either way."

After a moments thought Druquilla will look around the room for more clues to the answer of this puzzle.

"Want to try that again, big fella?" Mist asks as he reaches up to pat Gintarou on the elbow and casts guidance. "I'm sure the Oarsman would want you to..."

Finally breaking out of his study at the lightning strike against "There is a strong amount of evocation magic at work. I would expect more magical repercussions if things are not done right." Aubric will study the relief and try to see any patterns 

Arcana or Investigation: 20

(OOF!)

Sorry about the typo, I was on my phone, and in a hurry so I didn't reread, but yes, Dex.

Mist as you touch Gintarou's elbow you do not feel the magic from the Oarsman, no guidance.

I will allow one more check to see if I can give a hint, I need it to be history.  Aubric has the highest, I will give advantage because I am assuming this to be a group effort.