Probably could be made a lot cheaper to cast, considering the upkeep.
I like adding another earth/water combo to pair with Trident.
The wording is a little misleading because it sounds like the +1 +1 is cumulative. Maybe it should be two sentences like:
All burrowed creatures gain +1 +1
All burrowed creatures are healed 1Hp each turn
Absorb
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Don't like the picture, the desert doesn't fit with "Enriched" or a
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ability