When Darigaaz Reanimated dies, he spawns a support. Once that support reaches the requisite number of shields, it is supposed to respawn him.
Well, it does respawn him–and then continues to respawn him every turn. Thus, he effectively grows by 8/8 each turn.
I’m not sure if that’s working as intended, but it sure seems like it should only bring him back once.
Edit: After posting this, I realized that this happened on the red node in RtO, and it’s possible that there were multiple copies of him in the graveyard–in which case it was simply continuing to fetch the other copies of him. Would still like clarification if it’s supposed to bring back all previous copies, or just once.
I’m pretty sure it only works if there’s at least one copy in the graveyard. I don’t have the card, but I’ve seen people discuss using it with Gather the Pack. Whether the support should self-destruct is a good question, though it’s currently working as it should by the wording of the card, so this isn’t a bug (unless I’m wrong and it does summon extra copies from nothing).
It is my opinion that the support should destroy itself after bringing him back. As is, if you can kill Darigaaz multiple times, there is only a delay the first time he returns. Any subsequent kills, he returns immediately the next round.
I faced off against him one match, and his support was up over 20+ shields by the end, I had to kill it almost every turn that I was able to, but it would come right back.