The Seriema EDH Deck

I want to build [[the Seriema]] so bad!!!

I saw two nice ideas and lines using him.

1. ⁠play creatures with flying, cast Seriema and tutor for [[sephara, sky's blade]], cast for W and station Seriema immediately so that all flying creatures are indestructible and tapped legendaries are indestructible.
2. ⁠play Seriema and tutor for [[oswald fiddlebender]], use Seriema as fodder for [[panharmonicon]] or [[sceptre of eternal glory]] or something valuable I can’t imagine. My 3. thought is a legendary keywordsoup? [[Odric lunarch marshall]], [[Giada, font of hope]], [[kwende, pride of femeref]] and our lord and savior [[zetalpa]]

I can't decide which path to take and when I try I’m lost in possibilities or dead ends. I’m suffering ADHD too :(

Has someone a precise idea with explanations for me