Board Game Arena

Nevermind, I was getting confused by the necro-robot who does the same for the opponent (you, in this case). Its the first time it shows up in a game where I don't have a necromancer, and before it had always happened after my own had been drawn. Sorry about this.

I'm quite convinced I've seen her trigger more than once, in several matches and different games, sometimes even when she is on the bench, not the "active" card.
I only play solo with auto-play on. Thats as much info as I can say I think, hope it helps.