You should probably cite where you got your art from Antagon.
Otherwise, I don't think it'll move up into the crucible...
Also, there's a discrepancy between the table and your card. Your table
shouldn't have "
Creature only deals damage...", but rather, "Only deals damage..." to match the picture. The comma in the card's description/card art is also unnecessary, because there's no 'clause' in the ability description.
(Stops playing English teacher)
Okay, that aside - it makes sense to have this card with
(especially since
is all about healing and whatnot), but I think the cost and ATTACK|HP make it a little bit too strong in mono-
rushes. Perhaps you can make it so that the non-upgraded card has a pretty annoying cost (say 3-5), while the upgraded card would have a MUCH lower cost (1-2) - after that, you can equalize the stats on both cards at 5|5, so the upgrade would allow you to play it earlier, assuming you had more health than the opponent.
Just my two cents.