While it's possible for all but two unique tier 5 minions to be removed from the pool, it is actually quite unlikely to happen.
This particular instance is the result of a bug with Reno's hero power. When the minion he made golden is returned to the pool, it doesn't put it back correctly and instead puts an invalid id into the pool. Then when anyone gets unlucky enough to grab the invalid id as a discover option or shop minion they just get nothing instead.
We've got a fix ready, pending the next server update.
syah_hs
Correct. Same issue. Thanks for calling it out.
syah_hs
While it's possible for all but two unique tier 5 minions to be removed from the pool, it is actually quite unlikely to happen.
This particular instance is the result of a bug with Reno's hero power. When the minion he made golden is returned to the pool, it doesn't put it back correctly and instead puts an invalid id into the pool. Then when anyone gets unlucky enough to grab the invalid id as a discover option or shop minion they just get nothing instead.
We've got a fix ready, pending the next server update.