Aviary Mechanic: Good if the player :::: NEEDS TO BOUNCE A PERM: Happens in a wipe situation / a situation where a flicker until end of turn doesn't happen... is kinda useless when you don't need to bounce a thing, but often you'll have extra mana late game and replaying an aura or something would draw you a card, or nevermake another perm, etc.
Cartouche of Knowledge; +1/+1, flying, draw a card. no bad. Replace Chosen by Heliod
Cartouche of Solidarity: +1/+1, fs, soldier.
Cloudform: Good for everything cept flicker spells
Owl Familiar cheapest draw cretin. Discard not that bad? kinda is.
Prophetic Prism instead of Springleaf Drum? Doesn't produce, but draws. Perhaps producing is best. Azorius Signet vs Springleaf. Springleaf is better due to 1 mana cost?
Puresteel Paladin + some more equipment, perhaps. Offers good draw potential, 2 mana.Combo with Panharmonicon. Speeds up Swiftfoot Boots.
Sensei's Divining Top: Good cuz it's 1 mana, and can keep replaying it and tapping it to draw... but doesn't quite synergize.
Silvergill Adept: Good if you have merfolk, cuz once it comes in, it's a great 2-mana draw. the best in the game.
Sisay's Ingenuity: 1 mana draw w/ colorchanging effect. Don't need turn 1 enchant tho.
Skeleton Key: unblockable, and synergizes with Puresteel Paladin.
Spreading Seas: Stops Ancient Tomb/ sensitive mana bases... Is cheap. Deck shouldn't focus TOO much on card draw. Perhaps a 2-or-less option should be a scry.
Thalakos Seer: The only pure draw for 2 besides Wall of Omens. Shadow's not bad either. No panharmon.
Thraben Inspector: Makes lots of artifacts that can sac to draw for 2.
Tsabo's Web: Pretty good to hinder Inventors' Fair, Academy Ruins, etc.
Whirlpool Rider: Allows an at-will hand exchange. Probably good.