If a card is spiking because of a tournament result or a viral moment, the window to capitalize on that is usually smaller than the grading turnaround time
If you're looking to make Anowon even stronger through upgrades, I would suggest adding more powerful Rogues like Thada Adel, Acquisitor, more ways to generate value through combat like Knowledge Exploitation, and finally more ways to plunder our opponents' graveyards like Mnemonic Betrayal
As for fit the Golgari sleeves are snug but not too tight
Joseph Tobin noted that rarity in this case is "artificially created", and "effectively a form of gambling" in which children need to repeatedly purchase booster packs to get more rare cards
Creatures with the Persist ability come back from the graveyard after they are destroyed if they have no counters on them, and then receive a -1/-1 counter upon their return
(2017-08-25) If you don't put the top card of your library into your hand, you put it back on top of your library without revealing it