As a 2/2 with vigilance, that's respectable, and the one time effects are fine too, I just don't think there's really a deck out there that's going to want to take advantage of either one
If you have other targets such as Visara the Dreadful or Verdant Force, feel free to add one or two, though
Secondly, whenever Hungering Hydra is dealt damage, as long as it survived said damage, it gains that many +1/+1 counters
This is complicated by all decks wanting to skew towards control and the dearth of fixing
Once its transformed into Braska's Final Aeon, it becomes a certifiable bomb that provides a ton of free advantage if left alone
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