Like most Magic: The Gathering cards, the value of Fireball depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Intl
For PSA and CGC graded slabs: Vaulted's Card Mag Plus (PSA) and Card Display Plus are built specifically for graded slabs, securing them without the scratching that loose stacking causes
In addition to being able to focus its efforts on supporting a single creature, Ajani can also spread its support to each of your creatures and Planeswalkers, providing them each with a +1/+1 counter or loyalty counter respectively
Thoughtcast makes the deck very consistent, playing a mana rock makes a 1/1 creature and enough of those creatures allows you to reduce the commander tax on Thoughtcast because it has Affinity
Galvantula Galvantula ex is a powerful Stage 1 Lightning Tera Pokmon with Item-lock capabilities, making it a competitive card
Refuse / Cooperate Although very narrow in both parts, Refuse / Cooperate is nice in formats like EDH where you have big spells being cast
