After Stony Silence is in play, your best chances to win are either to swarm with many creatures and a Signal Pest or to establish a decent defense and attack for two every turn with an Etched Champion
When a planeswalker has no loyalty counters on them, they are put into the graveyard
Isochron Scepter Quick EDH lifehack: If you hit someone with Thada Adel, Acquisitor and see Isochron Scepter in their library, take it, leave it exiled, and that opponent might literally be unable to win anymore
You may choose new targets for the copies."Illustrated by Marta Nael Magic: The Gathering, MTG
The +9,999 power is a fun easter egg because players couldn't deal more than 9,999 damage with any single hit to monsters in FF8
Cards like these should probably be sold at eBay or TCG since even after fees you are going to get more for them than you would just outing to a buylist