If possible, I would add the Amber/Sapphire from Rise of the FloodBorn set as it can be used to practice some different mechanics but also to mix and match to start learning how to make your own deck
Its limited in its application as a weaker Dispel, but you can sacrifice Diversion Unit to protect your team from a wrath, or to protect a better card from removal
This innocuous common is b-a-n-a-n-a-s
The set pulls from all 16 mainline Final Fantasy games, with familiar characters, summons, spells, and locations woven into Magic card form
Hercules: As cool as this six-cost Hercules looks, the Floodborn Hercules from Rise of the Floodborn is stronger
If youre looking for some inspiration, weve got all the best cards to pick up from Foundations