Glad to help

try using Doubling Season as well, that way you'll have a counter doubling source that can't be targeted by Murder, burn spells and/or board wipes like Wrath of God.

Doubling Season wont go in here. My five mana slot is already pretty crowded and I would just be trading vulnerability to Murder for vulnerability to Golgari Charm or Naturalize

Hi, i have a similar deck, here is my deck if you want to check It out---->Doubling Counters Menace

Btw +1

Whoah, awesome deck, I really like how fast you can double counters. You should check out my deck, Undergrowth Canopy.

:>

Winding Constrictor ?

Winding Constrictor and Hardened Scales aren't as effective as Corpsejack Menace, but they still work. Adding a few of these to the deck would increase the frequency of activating this combo, because you won't need to wait for one of the 4 Corpsejacks. You could settle for one of these alternatives.

Ooze Flux would make your hydras live longer by letting you pay 2 to replace them (without their abilities). You can activate the Ooze's ability in combat when a hydra would die in order to create an equally large creature in its place. This might not work, but I think it's worth a try.

Scavenging Ooze might fit in the sideboard if you struggle against removal or mill decks. This could come in to keep you alive. Sadly, Varolz, the Scar-Striped wouldn't work since half of your creatures have 0 power in the graveyard. Hmph.

Huh, was expecting this to be an Unbound Flourishing deck.

I thought about Unbound Flourishing but I just can't decide what to pull out for it