Theres a very simple coding on the cards that tells you what sort of energy you need to cast a particular spell
That 9-mana cost needs to come down quite significantly, but any reasonable amount of milling should fill your graveyard with permanents very quickly
You can put one into your hand and the other back on the bottom
However, there are potentially better cards like Revitalize, which also costs 2 mana but provides instant speed life gain and card draw without the need for a specific color requirement, making it more versatile in different deck archetypes
Other helpful items are playmats, calculators, and notepads to help keep track of damage and notes after your battle
Thus, every card on the list has been sold for that specific price