Mu Yanling has at least ten loyalty counters on it.
({1} magic symbol) ({G} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) your first turn, with ({G} magic symbol) ({U} magic symbol) available each extra turn available.
Steps
Activate Memnarch's first ability by paying ({1} magic symbol) ({U} magic symbol) ({U} magic symbol) , causing Mu Yanling to become an artifact.
Activate Vorel by paying ({G} magic symbol) ({U} magic symbol) and tapping it, doubling the number of loyalty counters on Mu Yanling.
Activate Mu Yanling's third loyalty ability by removing ten loyalty counters from it, causing you to take an extra turn after this one.