the reduce damage is new
This isn't the first time that's been done. Here's one example.
damage reduction is broad enough that there can be multiple cards with the ability. there are afterall multiple cards with the same abilities in game.
Of course. But I was pointing out that it wasn't new.
Ya, I do recall it being suggested several times before.
That said, even if its not a new mechanic, I think its one that would make many players very happy.
It is particularly useful for swarm and rush decks since it is most effective against mass CC, which rush decks are weak against.
A word of caution though, the ability should not be allowed to stack, or if it does it needs to be limited somehow. Otherwise fractal and mitosis will combos will be OP.