Poison Beast

[JessicaMuddy]

Once per turn, during your Standby Phase: Place one Rotting Counter on 2 of your opponent's monsters. When a monster has 3 Rotting Counters on it: Destroy that monster. When this card leaves the field: Take one Rotting Counter off each monster, then you can Special Summon one "Poison Beast" from your deck to your side of the field. You can only control one "Poison Beast".

 

Not really much inspiration for it except for Nimble Momonga, I guess.

[Flash Flyer - Sakura]

During your Standby Phase: Place 1 Rotting Counter on up to 2 monsters your opponent controls. Destroy a monster if it has 3 Rotting Counters on it. When this card leaves the field: Remove 1 Rotting Counter from each monster with Rotting Counters, then you can Special Summon 1 "Poison Beast" from your Deck. You can only control 1 "Poison Beast".

 

When you list a quantity of things in effects, use the numerical form of them; don't write out the number.

 

Anyway, I modified the effect slightly so it can work when opponent has only 1 monster. In a way, this acts like Venom Swamp to some extent as it kills monsters off when enough counters are on targeted monster; except it's a set 3 in this case. However, keep in mind that your opponent can either use the affected monster(s) to Xyz/Synchro/Fusion or whatever; considering this thing kills slowly. But the duplicate copies can more or less finish up things; assuming you can regenerate the counters faster, because they go away once one of them leaves.

 

Unlike the Venom archetype, which can generate extra counters to fuel Swamp and other things, this card's doing the same job on its lonesome and essentially builds up your Graveyard at best, but puts you no closer to getting rid of a problem monster.

[JessicaMuddy]

I can fix these problems by doing two things:

Increase this monster's ATK / DEF so it can stay out longer, and/or Making destruction at 2 counters.

Which one would be better?