Some popular Pokemon used as Draw Engines require you to discard a card before being able to draw
However, Ruin is a much better spell than Mind on the aftermath side where you can get rid of a problem creature based on how many lands you have
However, I cannot equip at any other point during my turn or during another players turn
Dragon" + 1 Warrior monster When a "Red-Eyes" monster declares an attack: You can target 1 Warrior monster in your GY
Once per turn: You can roll a six-sided die, then destroy all monsters your opponent controls if you roll 1 or 2, destroy 1 monster your opponent controls if you roll 3, 4 or 5, or destroy all monsters you control if you roll 6.
Given that both themes are mostly comprised of Fiend monsters, "Gruesome Grave Squirmer" can be used as a free extender then can freely Special Summon one of the Summoning Beast cards ("Dark Summoning Beast" or "Phantasmal Summoning Beast" in particular) from the hand or Graveyard after it is sent to the Graveyard