Holding priority, activate Myojin of Cryptic Dreams by removing an indestructible counter from it, copying the Arboreal Grazer spell three times.
Resolve the first Arboreal Grazer copy.
The Arboreal Grazer token enters the battlefield, putting Arid Archway from your hand onto the battlefield.
Arid Archway enters the battlefield, triggering itself and Evolution Sage.
Resolve the Arid Archway trigger, returning it from the battlefield to your hand.
Resolve the Evolution Sage trigger, putting an indestructible counter on Myojin of Cryptic Dreams.
Repeat from step 3 two additional times.
Repeat from step 2.
This brilliant loop turns a single casting of Myojin of Cryptic Dreams into an endless factory of creature tokens and landfall triggers. By using Myojin of Cryptic Dreams's activated ability to copy a spell like Arboreal Grazer, you generate a token that drops Arid Archway directly from your hand, which then triggers Evolution Sage's proliferate ability to replenish the indestructible counter you just spent. As Arid Archway bounces itself back to your hand every time it enters, you have all the ammo you need to endlessly recast your copied grazers and keep the cycle spinning forever.