A card given the designation "PSA 10" is a virtually perfect card, which must have four perfectly sharp corners, sharp focus and full original gloss, according to industry leader PSA (Professional Sports Authenticator)
Of the other suggestions you mentioned, I could see a few of the following as potential swaps: Rites of Flourishing could possibly replace Horn of Greed as a 1:1 CMC swap & some extra land drops
Outside of decks with topdeck manipulation or, to be honest, decks with Commanders like Aminatou I dont know if Id play this before Brilliant Restoration, or if I had one, obviously a copy of Replenish
This is to activate or deactivate its abilities
Grim lets you play a six drop on turn three and that will randomly ruin a lot of games
You can use it on an opposing Commander which is legendary to half its power and toughness to double the turns needed to kill you with Commander Damage due to the legendary rule one copy would die