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Looks like I actually don't have such a card.
Yes, @digdig is my splinterlands account. I requested the account keys from there, so that I also can blog here.

I just sent you a couple cards with health regeneration. One for the water splinter that has self heal and one for the Earth splinter that will heal your tank (first position monster).

Wow, thanks a lot, that's really nice of you.
Hope I get a quest for earth or water next, then I will test the new cards.