Emeria Shepherd + World Shaper + Lithatog + Bloodflow Connoisseur
Emeria Shepherd
World Shaper
Lithatog
Bloodflow Connoisseur
Infinite creature LTBInfinite creature ETBInfinite creature sacrifice triggersInfinite death triggersInfinite self-millInfinite landfall triggersReturn all nonland permanents from your graveyard to the battlefieldInfinite +1/+1 counters on a creatureInfinitely large creature until end of turn
How it works
Activate Lithatog by sacrificing a land.
Repeat step 1 until you control no lands.
Activate Bloodflow Connoisseur by sacrificing World Shaper.
When World Shaper dies, it triggers, return all lands from your graveyard to the battlefield tapped.
When the lands enter, Emeria Shepherd triggers that many times.
Resolve an Emeria Shepherd trigger that was triggered by a Plains, returning World Shaper from your graveyard to the battlefield.
Resolve all remaining Emeria Shepherd triggers.
Resolve the Bloodflow Connoisseur ability.
Repeat
This intricate loop transforms a graveyard full of resources into an engine of endless rebirth, centered around the graceful reach of Emeria Shepherd and its landfall triggers. By using Lithatog to steadily feed all your lands into the graveyard, you set the stage to sacrifice World Shaper to Bloodflow Connoisseur, triggering World Shaper's death ability to return every single land straight to the battlefield tapped en masse. Those arriving lands immediately supercharge Emeria Shepherd, letting you pluck World Shaper right back out of the graveyard and into play to restart the cycle while steadily growing Bloodflow Connoisseur's power.