Alright, so I believe I've got the grasp of what you are trying to say. Let me edit it:
Zombie / Effect
Level 1 - 50 / 50
When this card is sent to its owner's GY: Shuffle it into your opponent's Deck face-up. If you draw this card, and the original owner of this card controls a monster with an ATK and/or DEF amount that ends in 50, and your LP is an amount that ends in 50: Take 5000 damage, and if you do, Special Summon this card to its owner's side of the field. You can only use this effect of "Proliferating Doom" once per turn.
This is what I could make out of the effect. I took the liberty to simply having the effect activate on numbers ending with 50, rather than just weird numbers. First of all, it was much simpler to do so, but I also don't know anyone who uses monsters with those questionable stats.
Now, I can see that this card is extremely overpowered. First off, this card does a lot of damage for its effect– almost a bit too much. There isn't really any drawback to it either; you just shuffle it into your opponent's Deck whenever it is sent to the GY, whether by battle, for a Summon, or perhaps as Tribute for some other monster's effects. While you will have to most likely revolve your Deck around monsters with weird stats, limiting the versatility of this card, the effect just seems a bit too risky for the opponent to even draw. Of course now, you always have the chance of playing against someone who happens to take great regard to sending their Zombie-Type monsters to the GY. If this card is sent to the GY, the opponent doesn't take any damage, which may be a good thing then, but the monster will just be shuffled into the Deck again because there is no limitation to either how many times this effect can be activated or how it must be sent to the GY to activate its effect. The only ways to evade this card I can think of is to either 1: Banish the card, or 2: Add it to your hand without activating its effect. Not all Decks utilize the banishing mechanics, and very few are able to add a non-Archetypal card to their hand without drawing. With a certain supporting card, this card will become really scary. Also, most terrifying thing about this: Takes away your draw. I hope to make it clear, we have a dilemma.
However, I really do like your approach to these monsters with weird stats, and I have some suggestions that could potentially make this card more balanced:
1: Restrict the effect condition to: "When this card is sent from the field to the GY:...". This will allow the opponent to potentially bypass the card entirely, though with all of the available Zombie support, it shouldn't be too hard to set the card up again.
2: Reduce the amount of damage your opponent takes by -2950; "Take 2050 damage...". As before mentioned, considering all of the support these Zombie Type monsters get, it should be easy to burn your opponent's LP through less powerful, but nonetheless effective, effects. Also, the addition of the 50 at the end was so your opponent would have a gap to potentially recover from the sudden burn.
3: Add this effect: "... Special Summon this card to its owner's side of the field, then draw 1 card". I feel like this won't allow the card to be too effect against shutting down your opponent, considering how he/she would have drawn the card anyways had "Proliferating Doom" not been there.
If you were to implement at least the first two effects, I feel like the card would become much more balanced. I really enjoyed writing this response, and I hope you take my two cents into consideration. Thank you for reading.