For example, an undefeated legendary pokemon needs rolling 8 or more to be caught (which is obviously improssible with a d6)
Purery - Delicious Memory Quick-Play Spell Choose 1 monster on the field, and if you do, until the end of the next turn, it cannot be destroyed by battle, then you can discard 1 card, and if you do, Special Summon 1 Level 1 "Purery" monster from your Deck
Special Summon it, and if you do, reduce this card's Level by that monster's original Level, also you cannot Special Summon monsters for the rest of this turn, except FIRE monsters
This only being a five mana spell means Last Gasp is well past its best and often not able to deal with the issues at hand
The goal is to sacrifice your cheap creatures to extract plenty of value
Better yet, Ruthless Technomancer can reanimate all of your creatures if you can somehow give it Haste