index card binder sleeves EEEkit 225 Pockets Trading Sleeves, 9 Pocket Page Protectors for 3 Ring Binder, Standard Size Card Sheets Protectors for Sports Cards, These protective pockets provide archival Index Card Sleeves & Holders

N's Zoroark ex Hyper Rare #189/159 Hyper Rare #9 goes to the N's Zoroark ex Hyper Rare, the gold etched version of one of the set's four Trainer's Pokemon ex cards, currently at $18.45

It will always be better than Roiling Regrowth, though, and quite often better than Cultivate as well

For Azorius Birds: Birds has some solid options for cards that survive rotation, but the one that really stands out to me is the underplayed Aven Interrupter (aka Spell Queller at home)

Here are some fake cards I made

Also, since you can't be sure of your mana needs, Five Color always runs and loves morphs, since they are a guaranteed three-drop now and find mana to flip later