Its worth keeping an eye on all of these cheap Equipment cards since we know the set has a bit of an Equipment theme, but this one is pretty unexciting
Yes, there is a whole list of legendary hydras fit to be commanders
Daybound Back Tovolar, The Midnight Scourge Legendary Creature - Werewolf Whenever a Wolf or Werewolf you control deals combat damage to a player, draw a card
[I] [II] [III] Create a token that's a copy of target nonlegendary enchantment you control
Against fast reanimator decks this might be better than No Mercy, otherwise, this is just an additional way to make people stay away from our red zone
Let's look at each reason in turn: Vigilance - Since you want to swing to gain the Monarch and block to keep, enter vigilance letting you do both and ideally on an evasive dork like Serra Angel