So, basically they did almost exactly what i've asked: https://www.youtube.com/watch?v=jv7TjPJ5z_k&t=0sHellsmoke77;n10856301 said:glad you aren't a dev.
During a mulligan phase (between rounds) wardancer will go back to the deck.
Only when swaped by a card like Officer she will play itself on the board. Perfect.
wealmostsmart