Drain Life The classic game ender at 90s kitchen tables was so good, they nerfed it with Consume Spirit
Typically the best cards to summon from this are Starving Venom Fusion Dragon who only requires two dark monsters (and I mean, who isnt running at least 1 dark monster?) or Mudragon of the Swamp which only requires 2 monsters of the same attribute, but different types
With so many X spells, were going to want to use mana-doubling permanents such as Dictate of Karametra or Mana Reflection
Mewtwo exs crown rare is one of the better Psychic-types to make a deck out of
Lifegain decks are completely unable to do what they want until this card is off the battlefield, and token decks have to be very careful about how many token creatures theyre generating, or else theyll lose to Rampaging Ferocidons triggered ability
unfortunately remain in the way for the time being