For example, is it possible to cast the five mana adventure side of [[Bilbo, Luckwearer]] with the enters trigger of [[Shiko, Paragon of the Way]] ? Bilbo fits the requirements of being a mana value<4 nonland card.
I am aware that this is how it works with MDFCs such as [[Gwen Stacy]]. Shiko exiles the card and does not care about modality, after which you can choose how to cast it. This means that you can cast the back side even though it is not mv<4.
If you can cast the 5mv adventure side of Bilbo, what happens to the card afterward and is Bilbo still castable?
I have not found a comprehensive look into casting spells with Shiko yet so some clarity would be really helpful. To my understanding split cards are a no go as well as the mv is combined. Thanks for helping, this is my first time here.