I wanted Unmoored Ego as well, but its hard to justify having both that and Slaughter Games
Its enough for The Raven's Warning to show up occasionally in Keruga Fires decks in Explorer, of all things, but not very often
PSA 10 Gem Mint: Can reach $800$2,000+ USD for the most popular versions Note: The value varies a lot by set, edition, and supply but Charizard ex cards are generally collectible and can command high prices when graded at top condition
They have to already be ahead or have a four-power creature, and those are both big asks
This style of creature is happy to see the Research of the Wild putting a number of instants into the 'yard to amp up a Cognivore-style card, like these two: Both of those are better examples of what is happening
There are instances where you need to have the perfect draw to pull a comeback