MTG Salvation

Notably absent: "land"

That's my biggest takeaway; definitely should have been "player".

Also notably absent: "player" instead of "opponent". No getting rid of poison counters, I suppose.

to remove Hydroid Krasis counters

So, after Suncleanser we now have another card to remove counters from opponents. Reverse poison mechanic to come?

Probably another one of those "It costs nothing to add this word, and it adds some versatility in other formats" situations. No opponents will have counters in Standard, but it does remove energy, and in EDH it can remove experience counters, and allow for politicking with multiple opponents (Off the top of my head I imagine saving one opponent so you can team up to kill the Infect player)

Removes Energy counters from your opponent, a little late...

I'll play this all day long in EDH, I think it could become a staple at least in my playgroup. Just hits too many relevant targets for a cheap price not to see play. Wish it was an instant though.

If you play that on the new Chandra you blast yourself for up to 5 damage

Gideon's Sacrifice would like a word with you.

I mean, the flavor text is right there.