As a baseline, we'd recommend including 10 to 20 Pokmon, 8 to 15 Energy cards, and as many Trainers as you can with the cards left over
On impact, it returns that element to its owners hand, effectively removing it from play
Wizards previously teased the inclusion of iconic weapons such as the Vorpal Sword, along with dragon villain Tiamat - whose card features all five of MTG's mana colours, relating to each of her heads
Using mana rocks like Sol Ring or Arcane Signet to accelerate your mana production so you can cast your spells more efficiently
This is also where you will find 1 of the 2 borderless commons (1.8%) or 8 borderless uncommons (2.4%)
Drannith Magistrate, Sanctum Prelate, Archon of Emeria, Lavinia, Azorious Renegade, Boromir, Warden of the Tower, Aven Mindcensor & Containment Priest shut down a LOT of strategies