While there are plenty of substitutes that deal with artifacts and enchantments like Ancient Grudge, Wear // Tear, Nature's Claim, Vandalblast, and Kataki, War's Wage, none of these cards really do what Stony Silence does
Not only that, but Sanctuary Warden also comes with the useful ability to remove a counter from another creature or planeswalker and create a 1/1 token as well as draw a card in exchange
Hunting Grounds Selesnya decks rarely mess with the graveyard, but between cheap cards like fetch lands and ramp spells and green mill like Malevolent Rumble and Winding Way, you should have no trouble enabling threshold for Hunting Grounds
There are over 30 new Mega Pokemon with the latest DLC that has been added as well
Furthermore, the condition of the card heavily influences its rarity and value
Avoid top-loading binders as cards can fall out