Great suggestions! So maybe...
3/day—entangle (adult or older), greater command (ancient or older); 1/day— commune with nature (old or older), hold monster (great wyrm).
At a distance of 120 feet or more, it cannot be distinguished from a green dragon. (An expert viewer might notice that the jade dragon is somewhat smaller than its green cousin, more heavyset, with a thicker and shorter tail, however.) At closer range the dragon’s translucent scales shimmer and sparkle in the light, reveahg the mighty reptile‘s true nature.