Happy to see probably my favourite card idea, at least in the crucible being implemented (somehow)
However, I preferred the original, even though I understand (and had always understood) that while it is a great idea, it wouldn't be able to be implemented.
Still, this is a good take on the card idea. This isn't really as powerful/easily acsessible as Unstable Gas, but there are really only two ways to counter this (rewind-temporary, and quint-which would mean an opponents card is left unprotected)
The best combo seems to be with immolation (not that fire-rush and darkness have huge synergy), but I think that will be considered OP and will turn into an exception, much like rustler and shard of readiness.
Another potentially good combination would be with rage potion. Do the same damage as lightning, and also equip the creature for 5 attack a turn. Also, this creature is almost in a way, a mental quintessence. In PVP, people will be less likely to try to kill this (if it has even 10/5) just because they will take 5 damage. I think voodoo would also be a good status.
Anyhow, I like this card very much (though still not as much as the original
)
It might need some tweaking though, for more acsessibility.
Edit: Arrrgh..beaten to it by The Dictator. Gonna post it anyway though