This card is certainly fun, but the only thing I'm worried about is the '+1/+1' aspect to all Stalagmonsters on the field (including the enemies). Do the creatures gain +1/+1
every time you use Drip? (seeing that it can be used multiple times per turn...) I can start to see a whole bunch of 'denial'
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duo decks now, considering how deadly Quicksand, Poseidon, Flooding, and this card can be.
Cute art also.
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In order to fit the description on the card, perhaps you should write it like this:
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Drip:
Damages target creature for 1 HP.
If killed, target creature becomes
Stalagmonster and gains +1|+1 per drip.
Of course, the 'usable multiple times per turn' aspect is probably one of the most important things to include on there, so...