yugioh fun control decks History of the Meta - Part 2: Hand Fun Aliens Control Deck: Cosmic

The English dub censored this by instead having the losers he threatened to be sent to the "Shadow Realm", an alternate dimension of pain a suffering and arguably a Fate Worse than Death, but is stated to be escapable

(This is treated as an Xyz Summon.) Purrelyly X DARK Level 1 [ Fairy / Effect ] ATK 100 DEF 100 If this card is Normal or Special Summoned: You can add 1 "Purrely" card from your Deck to your hand, except a Quick-Play Spell

BackgroundAbout Mega Gengar ex Gengar (Gen 1) is one of the franchise's most enduring icons

And even if you don't go crazy, sac a bunch of tokens, get a bunch of Blood Artist triggers, and what have you, you can still easily end up with a pretty big flyer for four mana or give/proliferate it counters through other means