At the start of each battle, this Hero has a 15% chance to drop any received damage to 1 for 6 turns. In battles with multiple waves, the effect is refreshed at the beginning of each wave.
Special Skill: Just a Flesh Wound
The caster has a 50% chance to drop any received damage to 1 for 3 turns.
The caster gets Taunt that prevents enemies from using Special Skills on the caster’s allies for 3 turns.
All allies get +45% attack and a further 20% increase every time they are hit for 3 turns.
All-In-One Reference, courtesy of @Lumi tap on image to view it fully
Or: How many summons are needed to get a Legendary Challenge Event Hero?
It’s important to remember that Challenge Event Heroes have EXTREMELY low summoning odds. No amount of summoning will guarantee a Challenge Event Hero.
On average, in a 10-pull, you have a 2% chance of summoning Black Knight.
But that statistic can lead our minds astray in exactly how our odds play out as we continue summoning.
Some useful insights:
18 times out of 100, you’ll get Black Knight by pull 100
63 times out of 100, you’ll get Black Knight by pull 500
95 times out of 100, you’ll get Black Knight by pull 1500
99 times out of 100, you’ll get Black Knight by pull 2300
Putting that in Perspective
82 out of every 100 people won’t get Black Knight by the 100th pull
If 1 Million players each summoned 100 times, 820,000 of those players wouldn’t get Black Knight
5 out of every 100 people won’t get Black Knight by the 1500th pull
If 1 Million players each summoned 1500 times, 50,000 of those players wouldn’t get Black Knight
More Insights & Reading
I highly recommend reading these two threads for more information and context on summoning odds:
If you’ve read them a million times before, you may consider reading them again before deciding on your budget for summoning. A little time spent deciding on how much money you want to risk on summoning goes a long way to avoiding disappointment, frustration, and regret later.
At first, I thought he was a pure defense hero, but it appears he’s excellent in attack too. Activate his skill before some enemies are about to use their offensive skills, and this saves you. Either deadly sniper attack that do only 1 damage, or AoE attacks that do only 1 damage to BK and not the other heroes. It’s still luck based, but 50% is already a lot.
I haven’t faced him a lot in raid, so can’t really judge how he competes.
Second 5* for this event, I’m stoked!
I was hoping for some good tank options between last Atlantis and Avalon, now I have to choose, Black night, fresh minted Guinevere, Kunchen or Delilah.
Kunchen has competition in some strong Darks. Will have plenty of time to make up my mind, but BK has materials ready to go and I need a strong Fire 5*. So looks like he might win the tank race for me.
I like that. Thanks for sharing @Guvnor, have to keep it in mind if I run across a decent riposter. Just pulled +20 emblems off Boril for Kunchen and think I may have Reset token remorse.
Awesome information! I was lucky enough to snag BK this event and I’m currently lvling him (only tier 2 in the low lvl 20s). Once I can get him to at least max tier 3 I’ll most likely end up using him as my tank…although I think a max tier 4 Kunchen is probably better…either way I’ll make up my mind when the time comes. Only thing is I don’t have Elena…I do have others that have the “counter” ability but I’m going to have to level them further in order to make them viable in Defensive teams (alliance wars or otherwise). Thanks for doing the research on this!
Wow! Ok, cool. Thanks @zephyr1, someone mentioned something along the lines of synergy with riposte heroes yesterday, I just didn’t realize how it worked.
Edit: guess it was 8 days ago. I must’ve skimmed too fast when I read the post.
Well, Elena certainly brings the tile damage. Not convinced about BK’s tiles sans specials firing. If they ever fully animate all the attacks in the game, not just specials, I’d have to imagine BK wielding the Penetrator sword from Saints Row 4 and flopping that thing off enemy helmets when he strikes with tiles…
Special Skill: Just a Flesh Wound
Balance Changes
Avoiding Overspending & Heartache 
[Jul 2020] Knights of Avalon Challenge Event – Guides, Discussion & Summoning Results