Once you start playing with any of these cards, youll easily be able to take down your opponent in any match
If sending just one or two cards, consider taping the card-holding top-loader(s) between two more empty top-loaders, for extra rigidity and peace of mind (ensure tape is applied at the sides, so there is no way for the card(s) to come in contact with the tape)
If another ability of a source you control triggers when attackers are declared, such as that of Hamlet Captain, you may have it resolve before or after that of Hanweir Garrison or Hanweir, the Writhing Township
Five-mana creatures have to be extremely good to see lots of Standard play because there is so much competition at that slot between the different mythics, yet I think Crested Sunmare can get there
Abilities are, as stated before, just a consolidation of Pok-Powers and Pok-Bodies nothing new there