rare pokemon energy cards + Trainer Card Sapphire Type The Most Valuable And Expensive

Among these is Afterlife Insurance, a two-mana Instant that gives creatures you control Afterlife 1 until the end of the turn and lets you draw a card

GR Gold Rare Enemy Controller X SPELL Quick-Play Activate 1 of these effects

SR Super Rare Vaylantz Buster Baron X FIRE Level 2 [ MachinePendulumEffect ] ATK 800 DEF 800 P Scale 1 During your Main Phase: You can Special Summon this card to your Main Monster Zone in its same column, also you cannot Special Summon non-"Vaylantz" monsters for the rest of this turn, except from the Extra Deck

Attach Dark Metal Energy to 1 of your Pokmon

My initial estimation of Thoughtseize was that it was the most important card in the format, but we're not quite there yet

Cards that allow you to draw extra cards at the cost of life like Sign in Blood, Eldritch Pact, or Damnable Pact are great because you probably just gain back any life you lose