I need as much help as possible because I am running a complex deck so plz help me

Well, make sure you use all the Null and Void rulings:

You can only chain "Null and Void" to an effect that draws cards and does nothing else. You can chain "Null and Void" to the activation of "Pot of Greed" or "Jar of Greed". You can chain "Null and Void" to the activation of the effect of cards like "Airknight Parshath".

You can chain "Null and Void" to a Continuous Spell or Trap Card that causes drawing, such as "Mirage of Nightmare" or "Heart of the Underdog".

You cannot chain "Null and Void" to "Disturbance Strategy", "Graceful Charity", "Card Destruction", "Morphing Jar", "Mind Wipe", "Dragged Down into the Grave", or "Reload".

You can activate "Null and Void" during the Damage Step, for example against the effects of "Airknight Parshath", "Sasuke Samurai #3" or "Bistro Butcher".

The card(s) discarded by the effect of "Null and Void" are never treated as actually drawn, so they are considered sent from the Deck to the Graveyard.

You can chain "Null and Void" to "Reckless Greed". Since you cannot draw by the effect of "Reckless Greed", the effect of skipping 2 Draw Phases is NOT applied.

You can chain "Null and Void" to the effect of "Royal Magical Library".

You cannot chain "Null and Void" to the effect of "Appropriate" because the effect of "Appropriate" cannot be chained to.


And Greed ruings:

The effect of "Greed" only applies to cards drawn while "Greed" was active. If "Jar of Greed" is chained to "Greed"'s activation, "Jar of Greed" (Step 2) resolves and you draw 1 card for "Jar of Greed" before "Greed"’s effect (Step 1) was active, so no damage is inflicted during the End Phase. But if you chain "Greed" (Step 2) to "Pot of Greed" (Step 1), then "Greed" is active before "Pot of Greed" resolves, so the activator of "Pot of Greed" takes 1000 damage from "Greed".

You can chain to the effect of "Greed" that inflicts damage.


Probably some of the best options are Bistro Butcher and Sasuke Samuri #3 for both cards.

Strictly for Greed, there's Disturbance Strategy, and the other cards that don't work with Null and Void.

You first have to make up your mind on how you plan to use these cards, they come with a wide range of possibilities and all options take a specific deck-type.