I actually encountered it, and even relatively often.
Lately, I've been thinking more and more: wouldn't the game be a little (or much) more balanced if effects that depend on healing/damage were only activated when the healing/damage actually occurs? For example:
- the Dungeon wouldn't trigger when a follower/leader is healed, if they already have full health;
- the Disdain Servant and the purple dragon wouldn't draw a card while under the effect of Masamune;
- Blood wouldn't receive a + to the self-damage counter while under the effect of Vira.
Who knows, maybe then some of the nerfs wouldn't have been necessary.
To sell my soul