How many poison win cons can I have before its a "Poison Deck"?

I recently built [[Saryth the vipers fang]]. It's primarily a big green ramp into stompy dinos kind of deck. I cast a big dino and turn it sideways with trample and death touch. However, I also threw in a couple of poison win cons. [[Fynn the fangbearer]] has synergy too good to be ignored! I also have [[blightsteel colossus]] and [[triumph of the hordes]] mostly because I already owned both cards, and they have great synergy with Fynn. I also put in an [[inkmoth nexus]] again, cause I have one.

The first time I played this deck, I won with an army of [[Giant adephage]] and some other dino nonsense. This last gaming session, I managed two poison kills with Fynn and some other creatures.

My friends were like "Hey! That's a poison deck!" To which I said... no? It's only got a couple poison win cons. The intention of the deck is to trample your face.

So! How many poison win cons until its right to be labeled as a "Poison Deck"?