Backstab

Description
The shots spawn in a column behind the enemy side of the field and travel towards the left hitting and poisoning anything they collide with. Be careful and stand in the same row as an enemy to avoid hitting yourself!

Strategy and Synergy
One of the best poison applying spells, but with a major downside of being able to hit yourself. You can avoid it standing in front of enemies or structures - either ones already on the battlefield or ones you - or even pets. A more difficult way to avoid them is to use a teleporting spell like. The one character who doesn't care about the downside is Aria Violette, who is able to avoid Poison damage altogether. Get some to block the initial hit, though.

Don't take piercing upgrade, you will hit yourself.

Trivia
The card's description is a reference to the saying "Misery loves company".