I have 3 HP burn champs on my CB team
Ninja, Geomancer and Fat. I've never really noticed this before but now I'm pretty curious.
Would they end up cancelling each other out when placing on their own hp burn? Like would Ninjas A2 be cancelled out by Geo's?
Yes. Only one HP burn can be on the target at one time. So they are all overwriting each other.
This is why Poisons > HP Burn for CB as poisons can stack.
Also... as far as HP burn damage goes - Legendary Champ HP Burn > Epic Champ HP Burn > Rare Champ HP Burn.
Like I just wrote into a similar thread: Geomancer and other champs using hp-burn don't work together.
Stoneguard [Passive]
Decreases the damage all allies receive by 15% and deflects that damage onto each enemy under a [HP Burn] debuff placed by this Champion.
Thank you very much
