While Virtue of Knowledge isnt the speediest spell with a mana value of 5, the Instant half it gains through being an adventure is much cheaper and still frequently useful
Anim Pakal, Thousandth Moon Anim Pakal, Thousandth Moon rewards you for building around it with cards like Luminarch Aspirant or Rosie Cotton of South Lane to stack +1/+1 counters on it
Whenever Godo attacks for the first time each turn, untap it and all Samurai you control
Edicts are your best friend for Glissa's triggers
If you don't have Tiana, these are all great cards that will help you keep a healthy hand Amethyst/Steel Playstyle Might and Magic combines un-counterable bounce abilities with large, well-statted characters that are difficult to remove thanks to Resist
Sword of Feast and Famine is definitely a favorite, too: The moody sky, the glowing moon, and the fact that you can untap all of your lands by dealing damage to an equipped creature make it viable just about anywhere