shark yugioh cards YU-GI-OH! - Eagle (LTGY-EN011) - Lord of The Tachyon Galaxy - Unlimited Edition may be 1st or Unlimited Edition Deepsea Shark [1st Edition] MRD-038

For only two mana, you can essentially reverse a single instance of targeted removal once per turn making it harder for your opponents to take your important creatures off the board

As for where Sword appears in Constructed decks, Captain America, First Avenger seems to be a great home for expensive and clunky heirlooms with two abilities that synergize with high-cost Equipment

When its alliance ability triggers the first or second time, Rose Room Treasurer will give you a treasure token

Just leave a comment and if you're lucky or I'm looking for ideas I may jump on the chance to write about your suggested commander