This HAS to be a bug.
Sunbird is actually an Ultra-Rare, not Epic
I thought someone should make a bug report…all jokes aside this has to be a bug. After the nerf to the hoard mythic I keep out hope this is a bug… If someone took the time to put up other troops and how their damage compare it would help…if the damage is not boosted at the very least buff that skull reduction. Up so it could at least be a tank that can move the enemy team around
I shared some information in the official announcement thread about Tauraeus;
Jeto (she/they) - Support Human