The Champion vs Warlock

The champion is getting healblocked by warlock in event quest. As he's attacking the last node he gains the extra healing of x% of damage dealt that fight with each fury he gains, but the virus is heal blocking it. The sig ability of Champion clearly states he is immune to heal block and "any effects that modify regeneration". Interestingly enough, willpower was proccing.
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from the spotlight.
Anti-Healing
Warlock has excellent anti-healing abilities. His Infection Passive Heal Blocks the Opponent, and since it’s Passive it’ll work even when the Opponent is immune to Debuffs.
Also remember the last part of the ability:
any effects that modify Regeneration other than Poison., so it is not total.
The part for modifying the healing other than poison is related to stuff like despair mastery, soul barb debuff, and other abilities that passively reduces healing
I also added the Ghost Rider sp3 example. Damnation doesn't work against him, despite being a passive heal block and fate seal. Same thing goes for neurotoxin