Your best option to do that is by completing Battle Tasks or participating in limited-time events
Enter Teferi: the wise-cracking master of time who has his own bone to pick with the Phyrexians
Example: With the following hand, Im definitely casting Thoughtseize off Watery Grave on Turn 1
Inspiring Leader Inspiring Leader is one of my personal favorites because it bulks up creature tokens, one of my favorite strategies
All of this is piloted by either the face of the deck, Valgavoth, Harrower of SoulsValgavoth, Harrower of Souls, or The Lord of PainThe Lord of Pain, a card that seems to see a bit less play in the command zone
In particular, these packs contained Pocket Monsters belonging to certain members of Team Rocket