Idea is simple, run a leyline based slide control deck with a scapeshift combo win option. Basically you play the midrange control game and build up lands while and then win off of a Scapeshift all at once, or slow roll it with planeswalkers, beats, and Emeria recursive creatures. Not 100% on the Diabolic Intents, possible they should be Wilts or extra Boseiju's or Griefs or Thoughtseizes or any number of other options. Anyway, this is just a rough sketch/first try at the concept. Leyline means that Scapeshift only needs six lands to win, and Emeria starts recurring at seven lands.
4x Leyline of the Guildpact
4x Astral Drift
Creatures - 10
4x Orcish Bowmasters
3x Omnath, Locus of Creation
3x Solitude
Planeswalkers - 6
3x Wrenn and Six
3x Teferi, Time Raveler
Sorceries - 11
4x Edge of Autumn
2x Diabolic Intent
3x Scapeshift
2x Lorien Revealed
Lands - 25
1x Boseiju, Who Endures
4x Flagstones of Trokair
2x Misty Rainforest
1x Verdant Catacombs
1x Wooded Foothills
1x Jetmir's Garden
1x Raffine's Tower
1x Spara's Headquarters
1x Secluded Steppe
1x Tranquil Thicket
1x Temple Garden
1x Breeding Pool
1x Stomping Ground
1x Island
1x Swamp
1x Forest
1x Plains
1x Mountain
2x Valakut
1x Emeria, the Sky Ruin
3x Dovin's Veto
3x Unmoored Ego
3x Thoughtseize
3x Wilt
3x Cleansing Wildfire