I’m not too good at English, so I use machine translation.
I come near to Sorin2ndAbility or OliviaAbility in CombatPhase, and, <>, in front of Combat, more than 3 points, gain, please, Transform, time.
Transform, a point of damage to which <> gives it is fixed.
The well-known bug?
When Lone Rider (1/1) transforms to It That Rides as One (4/4) before attacking, the original attack damage (1/1) is dealt instead of the new attack damage (4/4)…then yes, this is a known bug. The devs are aware of it and are working on a fix.