Cards like Thief of Sanity and Fallen Shinobi wont make this list, since even though theyre card advantage tools, they dont add extra cards to your hand
Example: Remember the Thought Scour situation where you mill their scry after a weak Turn 1
Thats the kind of creature that can win virtually any race, so the fact you have way more than that going on here is amazing
Most signed cards are signed by the artists, however
Legendary Artifact Artifact (CTRL to add secondary) Creature Constable of the Realm Renown 2 (When this creature deals combat damage to a player, if it isn't renowned, put two +1/+1 counters on it and it becomes renowned.) Whenever one or more +1/+1 counters are put on this creature, exile up to one other target nonland permanent until this creature leaves the battlefield
Theres stiff competition for expensive cards these days