Going first, you can outright remove something like Professors Research before they even get to play it, which can easily win games on its own
Treat this token as a 1/1 green creature
Special Summon 1 monster from your hand or Deck that specifically lists "Assault Mode Activate" in its text, except "Assault Sentinel", also you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except Synchro Monsters
Edgar Markov Thats clearly too many vampires Edgar Markov is currently worth more than $150 to buy as a single
Grievous Wound's last ability triggers only once whenever enchanted player is dealt combat damage, no matter how many creatures deal combat damage to them at the same time
Later, when the Barian Pipe is created to funnel more Chaos energy into the human world, he makes it so that whenever his opponents lose LP, they get hit with real damage, which is amplified in Kaito's case since this damage is increased by the Fake Number he has, while Heartland only gets stronger throughout