The speaker describes dreams that feel almost earthbound, "as close as the ground," not lofty or fantastical but near and physical. Through them, the speaker seems to realize they come "from wonder," as if curiosity and amazement are their starting point. From there the poem turns oddly: because of that origin, the speaker "would lie" in a blue room, and the word "lie" does double work. It can mean resting down to sleep, and it can mean telling untruths.
The title word "Factional" sharpens this. The speaker would lie "as a faction," a word that hints at both a splinter group and a blend of fact and fiction. The poem suggests a self made of competing parts, or a truth that is partly invented. The final line, "pray for sleep," lands quietly. The mood is hushed, dreamy and a little uneasy: someone lying in a blue, perhaps sad or calm room, half-honest, half-imagining, hoping for rest.