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Towering Titan gives massive stat boosts based on toughness and everything trample if you sacrifice a creature with defender

He makes your commander harder to kill, provides two white mana for auras and equipment spells, and lets you re-attach auras and equipment whenever you want (provided it's on your turn)

Playmats give you a clean surface to play on and make it easy to pick up and move around your cards

Battlin' Boxer Veil currently starts at 2.42

Even opened boxes retain significant value, as evidenced by a US$156,000 sale at Fanatics

it was a hoot although I think it was quite easy to cheese the AI if I'm remembering correctly