MTG Salvation

I control Enchanted Evening on the battlefield.

If I cast Archon of Sun's Grace, and it enters the battlefield, does it see itself and trigger?

I know casting these two cards in the opposite order works, but I'm not sure about this order.

Yes. Because of Enchanted Evening, Archon of Sun's Grace will be an enchantment at the first moment it's on the battlefield, so its last ability will trigger (C.R. 603.6a-b). See also this thread.

Thank you for the answer!

Also that combo would create an endless loop.

~Funk Pirate

Yes, I'm aware of that part. I just needed to know if the order of the combo mattered.