I'm not exactly sure if given this were just "When ~ ETBs, put a deathtouch counter on target creature" would it be too strong. We already have quite a number of creatures that are strictly better than a 1/1 with deathtouch for C such as Vampire of the Dire Moon and Wasteland Viper.

Except both your examples are uncommon and this is common?

This feels slightly complex for a common. Giving something else deathtouch is more flexible. Since you can give it to something with first strike, or something they really want to block, or whatever.

Maybe, power wise, that's not actually worth sacrificing a creature for. But it's the set mechanic, enables other things that trigger on that mechanic, and so forth.

Heck; I wouldn't really be too surprised to see a common that's exploit for no inherent benefit. (Probably in black though.)

So yeah - this card feels like it'd fit in the set. Something has to be 11th pick, after all.

The way I think about this card, is it can be a 1/1 on turn 1, or it can be a 1 mana sorcery that gives a creature Deathtouch until end of turn

Wouldn't you almost always sacrifice the Peddler? Okay, admittedly, there are plenty of situations where you would not. But it just seems like a strange choice to add exploit to a 1/1 creature.

I don't see any reason why this couldn't be a 1/2...