Velen + Runi bug?

I just played a game with my velen deck, and my opponent somehow got a Runi, Time Explorer. And I’m not sure if its an intended feature but everytime i killed the velen, it just respawned. And nothing in his rotation of previous draenei makes it respawn. So it was basically unkillable without a silence, which i didnt have. Anyone else ran into this?

Yes there was:

Rare · Minion · Knights of the Frozen Throne · Taunt Battlecry: Summon a copy of this minion.

When Velen dies, his deathrattle triggers this battlecry, which resummons a copy of himself.

Oh wow! So that’s how it works