You missed the most important part of the card. ITS A LEGENDARY BEAR! We can do bear tribal in commander now All 16 of the green bears (so many 2/2s for 2) plus the 5 or so cards that make bear tokens (no Bear's Companion unfortunately.)
There is also the technicality in non-standard formats where this could be returned and cast multiple times during a single turn, which Hammer of Bogardan can't. Take an arbitrarily large amount of mana, and divide it by 8. Deal that much damage.
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