While he can certainly perform admirably within the context of this precon, I believe that youll probably get more mileage out of this deck by replacing Szarekh, the Silent King with one of the other commanders if you plan to upgrade this deck to play in higher power tables
Whether or not you should sell a golden chocobo is a tough answer, but if you must have an answer right away, I'd find the card grading service I trust the most, get the chocobo in a slab and hold onto it
It gives a creature -5/-5, so it gets around indestructible and can shrink bigger creatures
Update June 12, 7:30am CT: All MTG Lord of the Ring card prices were updated for June 12
One of the standout exceptions is Arcum Dagsson
Enter Steven, my hastily scribbled token with the first name that popped into my head