you cant, you absolutely NEED the Flute to play the song, which makes the stairwell appear that leads to arceus
now you can only get it with an action replay.the event is is the azure flute event which is over
you use action replay and the go to spearpillar plow the flute and the go up the stairs and there
You get arceus at level 80 but you must have an action replay and the code to get the azura flute
you need to use an action replay or go to a Pokemon event to get azure flute. once you have the azure flute you go to the top of mount corenet and play the flute. arceus will appear at level 80 so be prepared
If you mean What is the Latin for rainbow, it is arcus pluvius, or arcus alone, Arcus is a 4th declension noun, so its plural is not "arci" but arcus.
The Romans associated Arcus with Iris.
Arcus Odyssey was created in 1991.
Arcus Odyssey happened in 1991.
Arcus Argentariorum was created in 204.
Arcus-Air Logistic was created in 1973.
Rainbow = Arcus Iris; also either word alone. Horace used "arcus pluvius," however most Romans probably just said "arcus."
Arcus is not a Greek god, but a roman god. She corresponds to Iris, goddess of the rainbow - messenger of the gods, in Greek mythology.